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Norcold 1210 Series Service manual

1. Ice Maker 7 Mold Heater 8 Mold Thermostat 9 ON OFF Switch 10 Fill Switch 11 Hold Switch 12 Stepper Motor N G L GRN VERT BRN BRUN WHT BLANC BLK NOIR NEUTRAL RIBBED NEUTRE NERVURES WHT BLANC HOT SMOOTH CHAUD PLAT GRN VERT 44 11 12 Figure 12 3 Ice maker wiring diagram and pictorial Section 12 97 This page intentionally left blank
2. IMPORTANT IMPORTANT labels are followed by information that MUST be followed to complete technical assistance procedures or tests correctly Provide additional information that assists with completing steps within a procedure or an entire procedure NOTE 6 Section 1 General Safety Prevent child entrapment Before disposing of the refrigerator remove all doors and fasten all shelves with retainers External components may have sharp corners and edges Wear hand protection such as cut resistant gloves and exercise extreme care when handling the refrigerator Make sure all hardware such as hinges and fasteners retaining screws etc is properly fastened Electrical Safety Do not work on live electrical circuits Turn off AC power and DC power sources before attempting to remove service or repair any of the refrigerator s electrical or electronic components Do not over fuse electrical circuits Use the specified fuse and AWG wire size Do not wet or spray liquids on or near electrical connections and electronic components Most liquids including leak detection solutions are electrically conductive and create the potential for shock hazards shorts damage to electronic circuits and or ignite a fire Do not use extension cords to supply AC power to the refrigerator Do not remove the grounding prong from the refrigerator AC power cor
3. Normal setting internal contact opening centered in module hole Water fill adjustment screw Do not exceed one turn Do not turn the water fill adjustment screw if the contact opening is centered in the module hole See Figure 10 12 6 Turn the adjustment screw clockwise or counterclockwise to align the center of the contact with the hole in the module See Figure 10 12 Do not turn the water fill adjustment screw more than one turn Turning the screw more than one turn may damage the contacts WARNING NOTE 84 Section 10 Checking Mold Heater Resistance The mold heater resistance should measure between 71 to 79 ohms To check the mold heater resistance through test points L and H 1 Remove the ice bin and freezer shelf 2 Detach the ice maker from the evaporator plate Do not to pull on the wire harness 3 Rotate the ice maker so the module cover faces toward the freezer door then remove the cover 4 Lower the shut off arm to the ON position Checking Water Valve Solenoid Coil Resistance The solenoid coil resistance should measure between 295 and 360 ohms It can be checked at the water valve solenoid coil as illustrated in Figure 10 13 or through the ice maker module test points V and N as illustrated in Figure 10 14 To check resistance through points V and N 1 Remove the ice bin and freezer shelf 2 Detach the ice maker from the evaporator plate Do not to pull on the wire har
4. 1 COLD 9 COLDEST Screen 1 COLD 9 COLDEST All Diagnostics LED Off The screen number displays and within five seconds it turns off 1 COLD 9 COLDEST Only the ON LED should remain lit 1 COLD 9 COLDEST ON LED Replace the optical control display assembly if any other segment is lit Pressing the MODE switch button displays screen 1 COLD 9 COLDEST Screen 1 COLD 9 COLDEST Fin Temperature Displays fin temperature as sensed by the temperature sensing circuit through the thermistor This is not freezer or fresh food cabinet air temperature The example illustrated below shows 30 degrees Fahrenheit 1 degree Celsius fin temperature 1 COLD 9 COLDEST An open or shorted thermistor displays 00 as illustrated below 1 COLD 9 COLDEST Pressing the MODE switch button displays screen 1 COLD 9 COLDEST Screen 1 COLD 9 COLDEST Stored Fault History The first of two stored fault history screens It displays stored fault history using lit LED segments Segments fault descriptions are illustrated below 1 COLD 9 COLDEST 1 Burner failed to light relight 3 DC voltage low 4 DC voltage high 6 AC relay stuck closed 7 AC heaters failed open 2 Fresh food compartment door open for more than two minutes 5 AC mode selected but AC voltage not available Pressing the MODE switch button displays screen 1 COLD 9 COLDEST Section 9 7
5. 6 Remove two upper bracket screws Steps 3 to 6 see Figure 10 17 Figure 10 17 Ice maker fasteners and back plate Back plate Figure 10 19 Harness plug and thermal fuse To unplug wire harness Press locking tab in then pull back on harness Open spring clip to detach the thermal fuse Figure 10 18 Module cover Ice Maker Replacement Procedure Pull to remove Press on to Install Thermal fuse Cover 7 Rotate the ice maker so the front cover faces the freezer door and its front side facing down Steps 8 to 10 see Figure 10 18 and Figure 10 19 8 Remove module cover 9 Detach thermal fuse and 10 Unplug harness plug from module and 11 Remove the shut off arm See Figure 10 20 12 Reverse procedure to install ice maker 88 Section 10 Figure 10 21 illustrates the back view of modular water valve assembly found in 121X IMWD and 1211 IMWD models with ice maker and water dispenser system The label on the side of the assembly lists the assembly part number specifications and identifies the water dispenser solenoid coil colored Blue 12 VDC and the ice maker solenoid coil colored Red 120 VAC Two 8 32 x 1 hex head screws hold the extension bracket to the back panel The assembly is held on the extension bracket with two 8 32 x 1 hex head screws The valve assembly is suppl
6. 121X SerieS Service Manual Publication no 630613b 08 10 07 NORCOLD Inc Customer Support Dept Telephone 800 543 1219 Fax 937 497 3183 www norcold com NORCOLD Inc P O Box 4248 Sidney OH 45365
7. NORCOLD INC All rights reserved Publication No 630613B 08 10 07 SERVICE MANUAL 121X Series Gas Electric Refrigerators This page intentionally left blank Section 1 1 This service manual provides maintenance diagnostic and repair information for NORCOLD model 121X XX gas absorption refrigerators The information illustrations and specifications contained in this publication are based on the latest product information available at the time of publication NORCOLD reserves the right to make changes at any time without notice Intended Use This service manual is reference tool designed for technicians who are knowledgeable in the theory and operation of gas absorption refrigerators liquefied petroleum LP gas propane systems and AC DC electrical systems as installed in a variety of recreational vehicles RV How this Service Manual is Organized Section 1 Introduction This section covers refrigerator model and cooling system identification certification installation reference replacement part statement technical support contact safety awareness Section 2 Specifications Provides specifications applicable to 121X XX series refrigerators Section 3 Troubleshooting Flowcharts This section covers troubleshooting information and flowcharts for faults displayed through the optical control display assembly screen Section 4 Ventilation This section covers installation and ventilation informati
8. Propane gas is highly flammable and explosive Always use two wrenches to loosen or tighten LP gas system fittings to prevent damaging components piping or fittings Damaged components piping or fittings create the potential for gas leaks Do not use leak test solutions containing ammonia or chlorine Ammonia and chlorine corrode and break down brass and copper components Safety Review Section 2 7 Internal Capacities Freezer 2 volume 1 3 cu ft each Fresh food compartment volume 8 0 cu ft Controls Type Electronic with built in self diagnostic ON OFF MODE TEMP SET switches Overlay assembly with flush pushbuttons Temperature setting range 1 cold to 9 coldest Temperature sensing device Thermistor Off level operating limits Side to side 3 degrees maximum at refrigerator Front to back 6 degrees maximum at refrigerator DC power Electronic controls voltage requirement 10 5 to 15 4 VDC DC fuse F1 in
9. R O T A T E 628 35 8 DISCONNECT POWER TO MODULE 106 626649 IM REMOVE S W2 01 13 03 185W 115V 60 HZ UR MIN MAX RANGE HOLD H Hz REL mA A mV V V OFF A COM V mA mA 1000V MAX 400mA MAX FUSED 10A MAX FUSED PEAK MIN MAX mA CAT II 4 1 2 DIGITS 1 Seconds 87 TRUE RMS MULTIMETER III V V Figure 10 16 Measuring voltage at stepper motor NOTE NOTE 86 Section 10 Symptom Probable Cause Solution Not cycling and no ice in mold 1 No AC power available 2 No water available 3 Water valve strained clogged 4 Water valve failed to open 1 Restore AC power 2 Restore water pressure 3 Clean water valve strainer 4 Check solenoid coil connections and resistance Not cycling ice in mold 1 Shut off arm in OFF position 2 No AC power available 3 Leaky water valve 4 Jammed ice cubes 5 Mold heater open no resistance 6 Module thermostat faulty 7 Excessive mineral deposits buildup in mold 1 Lower to ON position 2 Restore AC power 3 Replace water valve 4 Check for bent shut off arm 5 Replace ice maker 6 Replace ice maker 7 Clean mineral deposits buildup in mold Excessive frost on and around ice maker 1 Air entering freezer compartment 2 Open container s in freezer 1 Check freezer door gasket wire harness Permagum seal 2 Contai
10. 4 6 5 D 12 D 11 Z3 C 1 Potter amp Brumfield T77V1D10 09 CHINA 10A 120VAC 30VDC RES 700514 JW4 JW6 D2 R9 R7 R24 R46 R4 R5 R23 R20 R18 R21 R21 JW7 JW9 JW10 JW8 R36 R41 R45 JW2 R441 R8 R10 JW3 R6 R40 R43 R42 R2 R38 R47 R30 R48 R35 R33 U1 LP1 Q1 Q2 Q6 C9 D10 R11 R12 C7 R16 R15 R17 R19 R13 R22 R32 R31 Z2 D7 R14 U4 C3 C5 U3 U6 JW11 Z4 Fresh Food Compartment Light The fresh food compartment light off and on operation is controlled by door operated switches The location of each switch is illustrated in Figure 6 3 page 47 DC fuse Figure 6 1 DC power connections and polarity Figure 6 2 DC power fuse location Power Board DC Fuse The power board is protected by a 5 amp standard automotive blade style fuse Fuse location is illustrated in Figure 6 2 Polarity The polarity of power board connections is as outlined below a 12 volt DC positive is to be connected to power board terminal 12VDC See Figure 6 1 b 12 volt DC negative needs to be connected to power board terminal GND See Figure 6 1 Light bulb replacement To replace the light bulb 1 Power off the refrigerator 2 Remove the light cover 3 Remove the existing light bulb 4 Install the new light bulb P N 61689122 Make sure the light bulb
11. 7 Set the controls to Diagnostics a Navigate to screen 3 fin temperature b Record time and fin temperature 8 Allow the refrigerator to operate for eight hours with all doors fully closed Replace cooling unit when all of the following are met 1 No temperature change in Diagnostics mode screen 3 2 The no cooling fault stored in Diagnostics mode screen 5 segment 7 3 High temperature limit switch is open and fault L1 oP displays 4 The leveling chamber is extremely hot and absorber coils are at ambient temperature approximately 66 Section 8 Cooling System Diagnostic Flowchart Do not bypass or modify the refrigerator controls Do not wire the heater directly Heaters are supplied power through a fused circuit WARNING Do not power ON the refrigerator if the cooling system has a leak or is suspected of having a leak WARNING Begin Any signs of leakage 1 Check heat sources 2 Signs of cooling system leakage Yellow ammonia residue Ammonia smell Installation ventilation meet guidelines Replace cooling system YES YES YES Correct installation and ventilation NO 3 Heat input device operating normally NO Level refrigerator as specified in Owner s Manual Check as required AC heaters amp draw 2 5 to 2 1 A per heater Burner 7 slot clean Orifice LP18 clean Gas pressure 10 5 to 11 5 in w c 4
12. Align doors as needed 2 Check worn hinge bushing 3 Check for bent bottom hinges Replace as needed Door damaged or warped 4 YES Replace door NO Switches turn off light when held closed 5 Replace switch NO YES From page 24 Adjust door hinges until the left door and the right door rail are even with each other Adjust so the doors panel retainers are evenly spaced vertically Figure 3 11 Fresh food compartment door adjustment criteria 26 Section 3 MODE ON OFF SET TEMP on 1 COLD 9 COLDEST 1 COLD 9 COLDEST FL Code Flame Present with Gas Off Begin Flame on 1 Voltage present at coil 2 Flame sense circuit malfunction Replace power board NO Check for DC voltage at gas valve solenoid terminals YES Gas valve leaking internally or stuck open Replace gas valve Replace power board NO YES The FL fault is recorded in all operating modes any time a flame is sensed at the burner when is not supposed to be lit The FL fault displays and is recorded in non volatile memory approximately 25 seconds after it occurs IMPORTANT Section 3 27 L1 oP Code Open High Temperature Limit Switch The L1 oP indicates the high temperature limit switch is open or disconnected The switch is located on the cooling system canister It is designed to open when the cooling system boiler temperature exceeds 378 degrees Fahrenheit 192 2
13. Reverse steps 5 through 1 to complete procedure 58 Section 7 Power board replacement procedure Tools 1 4 nut driver Anti static wrist strap Removal of existing power board 1 Power OFF the refrigerator 2 Power OFF the RV DC power to the refrigerator For steps 3 4 and 5 see Figure 7 10 page 59 3 Unplug the AC power cord at the RV AC receptacle and at the power board 4 Disconnect DC power supply wires at power board terminals 12VDC and GND 5 Disconnect the spark sense electrode wire 6 Remove the power board cover See Figure 7 11 page 59 a Remove two 8 32 x 1 hex head screws b Pull the cover off the power board For steps 7 8 9 10 See Figure 7 12 page 60 7 Disconnect the AC heater wires at power board a Black wires at terminals AC_HT_LO and AC_HT_LO2 b Yellow wires at terminals AC_HT_HI and AC_HT_HI2 8 Disconnect the high temperature limit switch wire leads terminals LIMIT IN and LIMIT OUT 9 Disconnect the wire harness connector at terminal P1 10 Disconnect the wire harness connector at terminal P2 12 Remove the existing power board from the base and install the replacement power board See Figure 7 13 page 60 13 Reverse steps 12 through 1 to complete installation Back View To disconnect To connect Figure 7 9 Harness connector Optical control display circuit board Section 7 59 12 volt DC connections AC
14. Wait five seconds 4 Press and hold down the SET TEMP button until 1 COLD 9 COLDEST appears on the screen Pressing the MODE switch button displays screen 1 COLD 9 COLDEST Screen 1 COLD 9 COLDEST Power Board Inputs Displays live power board inputs through lit LED segments The assigned LED segments and information are illustrated below 1 COLD 9 COLDEST 3 Thermistor sensing temperature 1 Fresh food compartment light is off and door is closed 2 Sensing flame LP gas operation Pressing the MODE switch button displays screen 1 COLD 9 COLDEST IMPORTANT 76 Section 9 1 COLD 9 COLDEST 1 COLD 9 COLDEST Screen 1 COLD 9 COLDEST Power Board Outputs Displays live power board outputs through lit LED segments The assigned LED segments and information are illustrated below 1 AC relay is closed 3 DC power to divider heater 4 DC power to gas valve solenoid coil 6 DC power to ignition circuit 5 DC power to light circuit Pressing the MODE switch button displays screen 1 COLD 9 COLDEST Screen 1 COLD 9 COLDEST DC Voltage Input Displays DC voltage input to power board through lit LED segment The assigned LED segments and information are illustrated below 4 10 5 to 15 4 volts DC 1 Over 15 4 volts DC 7 Below 10 5 volts DC 1 COLD 9 COLDEST Pressing the MODE switch button displays screen 1
15. White Red 12 VDC in 12 VDC in 18 Section 3 Thermistor Circuit Open or Shorted Backup Operating System BOS MODE ON OFF SET TEMP 1 COLD 9 COLDEST on Open or shorted thermistor This fault is indicated by a blinking temperature setting It may be set by Intentionally disconnecting the thermistor from the circuit An open thermistor O L indication A shorted thermistor 0 resistance Broken thermistor wire leads Corroded or broken thermistor connectors The fault causes the temperature setting number to blink anytime the TEMP SET switch button is pressed After ten seconds the blinking setting turns off Backup operating system BOS BOS is a duty cycle designed to maintain cooling anytime the thermistor is sensed open or shorted When the refrigerator is operating in BOS changing the temperature setting on the display increases the cooling cycle For example changing the setting from 5 to 6 increases cooling cycle time Lowering the setting from 5 to 4 decreases cooling cycle time Begin Temperature setting flashing 1 Wires and connections in clean and in good condition 2 Thermistor operating as designed NO Check thermistor wires at thermistor and at connector See Figure 3 9 page 19 YES NO YES Clean and repair connections as needed Measure thermistor resistance See Figure 3 10 page 19 Refer to page 19 Table Thermistor Resi
16. enclosure depth more than 24 in and less than 26 in Section 4 35 Vent even or below enclosure floor 621156 Vent Distance between the top of the lower vent opening and bottom of baffle 4 to 4 in B ottom baffle Top baffle 1 in clearance max 1 in clearance max Aluminum or galvanized steel sheet baffle full width of enclosure Angle not to exceed 45 622293 Roof cap 616319 Exhaust vent Fans Figure 4 3 Roof venting Exhaust vent offset inboard of cooling system enclosure depth more than 24 in and less than 26 in 36 Section 4 622293 Roof cap 616319 Exhaust vent 0 1 in clearance max Distance between the top of the lower vent opening and bottom of baffle 4 to 4 in Bottom baffle 0 1 in clearance max 621156 Vent Vent even or below enclosure floor 1 4 in clearance max Aluminum or galvanized steel sheet baffle full width of enclosure Wood aluminum or galvanized steel sheet solid baffle Full width of enclosure Starts 18 to 18 from enclosure floor Fans Figure 4 4 Roof venting Exhaust vent centered over cooling system enclosure depth more than 26 in Box baffle required Section 4 37 Figure 4 5 Sidewall venting Enclosure depth more than 24 in and less than 26 in Aluminum or galvanized steel sheet full width of enclosure Aluminum or galvanized steel sheet full width baffle Fans 621156 Vent Minimu
17. 5 4 Coil resistance should be within 77 and 85 ohms Burner Tube Assembly The burner tube is 1 4 inch OD aluminum tubing The anti vibration loop absorbs vibration to prevent metal fatigue Each end of the tube ends in a double flare The burner tube is illustrated in Figure 5 5 Figure 5 4 Checking solenoid coil resistance Figure 5 5 Burner tube assembly Double flared Burner connection fitting Anti vibration loop Gas valve connection fitting Double flared 44 Section 5 Burner and Orifice Assembly The 7 slot burner illustrated in Figure 5 6 is fitted an LP 18 cap style orifice The burner is retained in the burner box by a 8 32 x 1 Phillips pan head screw Orifice assembly Retaining screw 8 32 X 3 8 Phillips head 7 slot burner LP18 stamped on orifice face 1 8 L P Burner and Orifice Cleaning Procedure 1 Turn off the refrigerator 2 Shut off the gas valve s at the LP gas container s 3 Turn the manual shutoff valve to the off position 4 Move the drain hose out of the way 5 Remove the drip cup screw then remove the drip cup 6 Remove the burner box cover screw then remove the burner box cover 7 Disconnect the burner tube at the orifice adapter 8 Remove the orifice assembly from the burner 9 Remove the burner retaining screw then pull the burner out of the burner box WARNING Always use two wrenches to disconnect the burn
18. DC WHITE wire from the water valve solenoid coil 5 Disconnect thermostatic switch and the water fill line heater as follows a The switch BROWN wire from the heater WHITE wire b The remaining thermostatic switch BROWN wire from the 12 volt DC RED wire c White heater wire from the 12 volt DC BLACK wire 6 Disconnect the ice maker water fill line at the ice maker water valve 7 Disconnect the water dispenser fill line at the water dispenser valve 8 Disconnect the RV water supply line at the water valve 9 Detach the water valve assembly bracket from the back plate Retain screws to install replacement valve 10 Reverse steps 9 through 1 and see Figure 11 5 and Figure 11 6 to install the replacement water valve Invensy N 86 624516 W1 12 VDC 10 W W2 120 VAC 60Hz 15 W Blue body Red body Figure 11 5 Water valve connections Top View Figure 11 6 Water valve inlet connection Side View NOTE 92 Section 11 Reservoir Replacement Dispenser Switch Replacement Tools 2 Phillips Screwdriver 1 Shut off the water supply to the valve 2 Place a suitable container under the spigot then operate dispenser to relieve water pressure 3 Power off the refrigerator 4 Disconnect the water line at the valve and place the end in suitable container to catch the draining water See Figure
19. Leveled operation YES NO YES Doors gaskets okay 5 Check condition of door gaskets Align doors as required NO Go to page 67 NO Section 8 67 6 Gurgling sound from boiler area YES 7 Cooling detected Replace cooling system Test cooling system performance Cooling system performance check 1 Disconnect the thermistor from the circuit 2 Set mode to AC 3 Set temperature setting to 9 4 Place a thermometer in a glass of water and record the temperature 5 Place the glass of water with the thermometer in the left freezer against evaporator plate 6 After three 3 hour compare the temperature of the water against the temperature taken in step 4 NO 1 Reconnect thermistor to wire harness 2 Set controls to Diagnostic Mode 3 Select diagnostic Screen 3 4 Record temperature displayed in Screen 3 5 Monitor fin temperature for 3 hours with all doors closed Fin temperature drop in 12 hours NO Replace cooling unit Cooling system is okay Expected temperatures after a 12 hour period 5 to 10 F on the rear middle of left freezer plate 18 to 25 F fin temperature range diagnostic Screen 3 Results based on Refrigerator empty All doors closed 12 volt DC input to power board 108 to 132 volt AC to power board Both fans operational 90 F ambient temperature Good
20. Model Letter Codes The letter after the model number identify optional factory installed components For example a 121XIMSS has a factory installed ice maker and stainless steel panel wrapped around style doors Information Label The location of the information label is illustrated in Figure 1 1 page 4 It provides the following information Serial number Model number LP gas propane pressure Btu hr AC voltage and amperage DC voltage and amperage Design certification Vent kit requirement Cooling System Serial Number All genuine Norcold cooling systems are serialized Serial number labels location are illustrated in Figure 1 2 page 4 Certification Information The 121X XX series gas absorption refrigerators are certified under ANSI Z21 19B standards for installation in mobile homes or recreational vehicles and under Canadian Standards Association CAN CGA 1 4 M94 Electrical components comply with UL standards Replacement Parts It is advisable to use only authorized NORCOLD replacement parts Generic parts do not meet NORCOLD specifications for safety reliability and performance The use of unauthorized aftermarket or generic replacement parts voids the refrigerator s limited warranty coverage Technical Assistance Technical assistance is available to service centers through NORCOLD Customer Service Center Telephone 1 800 444
21. Replace reset high temperature limit switch 3 Test cooling system performance on AC and LP gas operation Section 3 29 MODE ON OFF SET TEMP on 1 COLD 9 COLDEST 1 COLD 9 COLDEST no AC Code AC Mode Selected AC Voltage Not Available The no AC fault is recorded in either the AUTO or AC manual mode For the fault to occur in the Auto AC Mode AC voltage has to fall below 85 volts with LP gas operation locked out by the controls This fault is recorded approximately 25 seconds later provided there is a call for cooling For the fault to occur in AC Manual Mode AC voltage input has to fall below 85 volts with the controls calling for cooling The alarm sounds and the fault displays approximately 25 seconds later IMPORTANT Begin Voltage 108 to 132 VAC 1 2 Low or no voltage check refrigerator power cord continuity NO YES Clips loose broken 3 Replace power cord YES Check AC voltage input to power board Power cord has continuity NO Check RV AC outlet Refer to RV service and repair manual Fuse good Replace fuse NO Check for open AC fuse F2 on power board Check for loose F2 fuse holder clips Adjust fuse clips Replace power board Loose Broken YES 30 Section 3 MODE ON OFF SET TEMP on 1 COLD 9 COLDEST 1 COLD 9 COLDEST no FL Code Burner Failed to Light Relight Replace gas valve assembly 4 Begin Orifice and burner serviced a
22. board connector Green White Violet Figure 3 5 Measuring DC voltage across White Violet wire and Blue wire at the optical control display assembly circuit board connector White Violet Blue Optical Control Display Assembly Back View 10 5 to 15 4 volts DC CPC E 94V 0 D1 P2 P1 Figure 3 6 Overlay ribbon connection at Optical Control Display circuit board P2 connector Ribbon cable connector 1 Contacts face out and solid surface against the circuit board surface 2 All pins must engage the connector P2 Connector To switch buttons pad overlay 10 5 to 15 4 volts DC Voltage is only present when the ON OFF switch button is held pressed while turning ON the refrigerator IMPORTANT Section 3 17 100 B ANSI Z21 2 JW5 P3 RT424F12 12V 05 43 07 3 D5 R50 R49 07 3 07 3 07 3 4 C Q3 4 C D8 CPC E 94 V 0 P4 GND 12VDC Potter amp Brumfield T7CS1D2 05 5VDC 0544 700514 5A 120VAC CHINA D3 c 4 D6 3 07 R28 R 3 D13 07 3 R39 D1 N M 07 3 1237 0301 9 8 4 5 3 K3 R25 R27 R26 R29 C8 7 4 R 1 2 Potter amp Brumfield T77V1D10 09 CHINA CHINA 10A 120VAC 700514 10A 120VAC Potter amp Brumfield T77V1D10 09 30VDC RES 30VDC RES 700514 D4 R37 R34 4 6 5 D 12 D 11 Z3 C 1 Potter amp Brumfield T7
23. fill line is covered with a foil style 12 volt DC heater See Water Line DC Heater in this section The refrigerator has to be removed from the enclosure to service or replace the water fill line Water Fill Tube The water fill tube illustrated in Figure 10 4 is installed and sealed at the factory It is not a replaceable component Water Line Heater In ambient temperatures of 42 to 38 degrees Fahrenheit 5 5 to 3 3 degrees Celsius and lower the water line heater keeps the fill line and water valve body from freezing when the refrigerator is on This heater is controlled by a thermostatic switch illustrated in Figure 10 5 12 VDCin Figure 10 5 Thermostatic switch and connections Thermostatic switch Rear of cabinet 12 VDCout Water Fill Line The thermostat energizes the circuit when ambient temperature is approximately 42 to 38 degrees Fahrenheit 5 5 to 3 3 degrees Celsius and de energizes at approximately 48 degrees Fahrenheit 8 8 degrees Celsius The water line heater does not protect the ice maker water valve and fill line at ambient temperatures of 0 degrees Fahrenheit 17 degrees Celsius At these ambient temperatures the water valve and the water fill line need to winterized WARNING NOTE 80 Section 10 The water valve illustrated in Figure 10 6 is not a repairable component The solenoid coil is rated for 20 Watts 120 VAC The ice maker cycle energizes the coil for a
24. of any of the above Air Intake Vent Ventilation and combustion air flow through the air intake vent which also serves as the service access or door The air intake vent needs be kept clear of obstructions that may restrict the flow of fresh air into the enclosure Figure 4 1 illustrates a typical air intake vent installation Roof Exhaust Venting In a roof exhaust venting warm air and combustion gases flow out of the enclosure through the roof exhaust vent See Figure 4 1 The vent has a non removable metal mesh screen to prevent leaves birds rodents and or debris from entering the enclosure Roof cap The roof cap fits over exhaust vent The sloped end always faces the front of the RV It is held in place by four 2 1 2 long Phillips head screws Figure 4 1 illustrates the roof cap and screws section 4 VentilAtion FRONT OF RV Figure 4 1 Roof exhaust venting arrangement Vertical top baffle Roof cap SIde baffle Air intake vent Roof exhaust vent Fans 34 Section 4 621156 Vent Distance between the top of the lower vent opening and bottom of baffle 4 to 4 in Bottom baffle Top baffle 0 1 in clearance max 1 4 in clearance max 622293 Roof cap 616319 Exhaust vent Aluminum or galvanized steel sheet baffle full width of enclosure 0 1 in clearance max Vent even or below enclosure floor Fans Figure 4 2 Roof venting Exhaust vent centered over cooling system
25. refrigerator YES YES 1 Connect a fully charge 12 volt bat tery If the fault code does not display check the DC circuit feeding power to the refrigerator 2 If the fault code displays with the fully charged battery connected replace the power board Correct RV DC power output to refrigerator NO The dc HI fault is recorded in all operating modes any time DC voltage input is above 15 4 volts The dc HI code displays and is recorded in non volatile memory approximately 25 seconds after the fault occurs IMPORTANT 24 Section 3 MODE ON OFF SET TEMP on 1 COLD 9 COLDEST dr Code Door sensed ajar or open for more than 2 minutes The dr fault is recorded in all operating modes any time one or both fresh food compartment door has been sensed open for two minutes The controls turn the light off after the two minute period The dr code displays and is recorded in non volatile memory approximately 25 seconds after the fault occurs IMPORTANT Begin Fresh food compartment doors latch ing when closed 1 Latches working correctly 2 Adjust striker plated if needed NO Check handle latch mechanism operation YES Fix or replace handle latch mechanism Check door alignment NO Fresh food compartment doors aligned 3 YES Align door s See Figure 3 11 page 25 NO Go to page 25 YES Section 3 25 1 Recheck fresh food compart ment doors alignment
26. senses 17 to 14 degrees Fahrenheit 8 3 to 10 degrees Celsius The motor should run smoothly throughout the cycle until the ejector is parked If the motor does not run stops or makes grinding noises replace ice maker See section Replacing Ice Maker page 87 Figure 10 10 Ice maker 7 minute cycle events M old H ea te r S h ut O ff A r m U p OFF ON Ic e C ub es Sw ep t Water Valve ON Water Valve OFF S h u t Of f Ar m D o w n New cycle begins Motor Enegized Ice Ejected Testing Water Valve Operation Water valve operation can be tested by jumpering points V and L Before this test is performed make sure AC power is available shut off the water supply to the water valve and make an insulated wire jumper like the one illustrated in Figure 10 8 page 81 To test water valve operation 1 Remove the ice bin and freezer shelf 2 Detach the ice maker from the evaporator plate Do not to pull on the wire harness 3 Rotate the ice maker so the module cover faces toward the freezer door then remove the cover 4 Insert one end of the jumper in test point V and the other in test point L See Figure 10 11 page 83 When jumpered the solenoid coil should make a click sound followed by a continous buzzing sound as long as the jumper remains in test points V and L Sectio
27. shelf 2 Detach the ice maker from the evaporator plate Do not to pull on the wire harness 3 Rotate the ice maker so the module cover faces toward the freezer door then remove the cover 4 Lower the shut off arm to the ON position 5 Make sure AC power is available to the ice maker 108 to 132 VAC normal voltage to motor 0 voltage check voltage at AC outlet and continuity of ice maker power cord 108 to 132 volts AC through AC power cord Check ice maker wire harness BLACK wire and WHITE wire for continuity 5 Set the multimeter to ohmmeter function then insert one probe into point L and the other into point H as Figure 10 14 illustrates The multimeter test probe tips must be at least 1 2 inch long to contact the test points Figure 10 15 Measuring mold heater resistance 6 Set the multimeter to AC voltage function then insert one probe into point N and the other into point M as Figure 10 15 illustrates 628135 D O N O T R O T A T E 628 35 8 DISCONNECT POWER TO MODULE 106 626649 IM REMOVE S W2 01 13 03 185W 115V 60 HZ UR MIN MAX RANGE HOLD H Hz REL mA A mV V V OFF A COM V mA mA 1000V MAX 400mA MAX FUSED 10A MAX FUSED PEAK MIN MAX mA CAT II 4 1 2 DIGITS 1 Seconds 87 TRUE RMS MULTIMETER III 628135 D O N O T
28. terminals 2 3 Check DC voltage input at Power Board Check for loose or damaged RV wiring or connectors Repair as needed then recheck for voltage 1 Unplug wire harness at Power Board P1 con nector 2 Check for voltage across Power Board P1 1 and P1 6 See Figure 3 2 page 15 Replace fuse Voltage output NO Check Power Board F1 fuse Fuse loca tion shown in Figure 3 1 page 14 YES NO YES NO Go to page 13 YES NO YES Troubleshooting Flowcharts Blank display Refrigerator does not turn ON Loose or broken terminals MODE ON OFF SET TEMP 1 COLD 9 COLDEST on Section 3 13 From page 12 6 Loose or damaged wire terminals at harness or circuit board connector Repair as needed then recheck for voltage 1 Connect the volt meter probe to the Blue wire and the probe to the White Violet wire See Figure 3 5 page 16 2 Press and hold the OFF ON switch button Voltage present Powers ON when the switch button is released Harness connected incorrectly to the Optical Control Display circuit board Loose or damaged terminals at wire har ness connector or circuit board connector Repair as needed then recheck for voltage 7 8 Voltage present with OFF ON switch button held pressed 7a Voltage across Green wire amp White Violet wire terminals See Figure 3 4 page 16 Optical Control D
29. the Wire Harness at the P1 Power Board connector 2 Check the Wire Harness Blue wire and White Red for continuity See Figure 3 7 page 17 Refrigerator ON Replace the Optical Control Display Assembly Voltage present after releasing switch button MIN MAX RANGE HOLD H Hz REL mA A mV V V OFF A COM V mA A 1000V MAX 400mA MAX FUSED 10A MAX FUSED PEAK MIN MAX A CAT II 4 1 2 DIGITS 1 Seconds TRUE RMS MULTIMETER V Figure 3 1 Checking continuity of power board F1 fuse Installed in power board Removed from power board Section 3 15 Figure 3 2 Measuring DC voltage across P1 1 and P1 6 with wire harness disconnected 100 B ANSI Z21 2 JW5 P3 RT424F12 12V 05 43 07 3 D5 R50 R49 07 3 07 3 07 3 4 C Q3 4 C D8 CPC E 94 V 0 P4 GND 12VDC Potter amp Brumfield T7CS1D2 05 5VDC 0544 700514 5A 120VAC CHINA D3 c 4 D6 3 07 R28 R 3 D13 07 3 R39 D1 N M 07 3 1237 0301 9 8 4 5 3 K3 R25 R27 R26 R29 C8 7 4 R 1 2 Potter amp Brumfield T77V1D10 09 CHINA CHINA 10A 120VAC 700514 10A 120VAC Potter amp Brumfield T77V1D10 09 30VDC RES 30VDC RES 700514 D4 R37 R34 4 6 5 D 12 D 11 Z3 C 1 Potter amp Brumfield T77V1D10 09 CHINA 10A 120VAC 30VDC RES 7005
30. ventilation From page 66 NO YES Cooling system may have to be resealed 68 Section 8 1 Remove left and the right freezer evaporator plate bolts along with the washers 2 Remove seven bolts from fin assembly 3 Unclip the thermistor from the fin assembly Water dispenser units a Remove the paddle assembly b Remove the water dispenser cover c Disconnect the spigot d Disconnect the wiring and remove the bracket containing the LED board spigot and switch as an assembly It is not possible to anticipate all of the RV manufacturers enclosure design or refrigerator installations practices Always double check for additional screws and brackets before attempting to remove the refrigerator from the enclosure as certain RV manufacturers may install additional brackets or screws to secure the top and the sides of the refrigerator to the enclosure Tools 1 4 nut driver 5 16 nut driver 7 16 open end wrench 9 16 open end wrench 5 8 open end wrench 2 Phillips screwdriver IMPORTANT Cooling System Removal Cooling system replacement requires removing the refrigerator from the enclosure Protect the front of the refrigerator Cover the floor with a moving blanket pad or similar soft material to protect the floor as well as the refrigerator doors panels and optical display when the refrigerator is laid down on the floor CAUTION 4 With the assistance of an able person lay the
31. water dispenser works as follows Pressing a small container against the spring loaded paddle drives in the plunger which closes the switch The switch sends power to the water valve solenoid coil The electromagnetic force created by the coil opens the water valve allowing water flow into the reservoir Water flows from top of the reservoir to the spigot The water flowing out of the spigot is replaced by water flowing into the reservoir as illustrated in Figure 11 4 Water Dispenser Operation Figure 11 4 Water flow through dispenser system Dispenser water valve open Reservoir Water to reservoir Water flow to spigot Water dispenser Container against paddle Blue body Red body Section 11 91 Water Valve Replacement 1 Unplug the ice maker AC power cord from RV receptacle 2 Shut off the water supply to the valve 3 Disconnect the BROWN wire and the WHITE wire at the ice maker solenoid coil This procedure applies only to the modular ice maker and water dispenser valve assembly part number 624516 To remove the water valve assembly proceed as follows and refer to Figure 11 5 and Figure 11 6 WARNING Unplug the refrigerator AC power cord from the RV receptacle when working on the water valve Failure to unplug the AC power cord may expose the technician and or other personnel to an electrical shock hazard 4 Disconnect the 12 volt DC BLACK wire and the 12 volt
32. wires NO Replace gas valve Replace power board YES P1 10 P1 2 YES NO Figure 3 12 Spark electrode assembly Check continuity Check for cracks Figure 3 13 Checking solenoid coil wires continuity Figure 3 14 Checking solenoid coil resistance Check for tightness 32 Section 3 This fault is recorded in all operating modes anytime one of the following occurs 1 Problem in flame sense circuitry 2 Gas valve drive circuit present when it is not supposed to be 3 Gas valve drive circuit not present when it is supposed to be 4 Internal memory fault The fault registers approximately 25 seconds later in Diagnostic screen 5 segment 5 IMPORTANT Flame sensing circuit malfunction Replace power board Sr Code Flame Sensing Malfunction MODE ON OFF SET TEMP on 1 COLD 9 COLDEST Section 4 33 Enclosure The cabinet that encloses the refrigerator is built by the RV manufacturer Depending on cabinet depth height and width certain baffles may be present when cabinet clearances exceed installation guidelines and specifications Baffles Baffles prevent hot air buildup pocketing between the refrigerator cabinet and the enclosure walls and or ceiling An enclosure may be fitted with An absorber baffle and a condenser baffle Side baffles Vertical top baffle Vertical angled baffles Box baffle Or a combination
33. 0 5 volts DC input to power board AC heaters connected incorrectly to power board Both AC heaters failed open Page 20 Page 20 Altern a t i n g D i s p la y ALARM AUDIBLE Altern a t i n g D i s pl a y ALARM AUDIBLE ALARM AUDIBLE Altern a t i n g D i s p la y ALARM AUDIBLE Altern a t i n g D i s p la y Flashing Temp Setting Blank Display Screen ALARM AUDIBLE Page 12 Page 18 Section 3 11 Fault Code Probable Cause Reference Altern a t i n g D i s pl a y ALARM AUDIBLE D i s p la y ALARM AUDIBLE Altern a t i n g D i s p la y ALARM AUDIBLE Altern a t i n g ALARM AUDIBLE Altern a t i n g D i s pl a y Flame present with gas off Page 26 Open circuit high temperature limit switch No AC voltage input to power board AC cord unplugged at power board Power board F2 fuse open blown Burner failed to ignite or relight Flame sensing circuit malfunction Page 27 Page 30 Page 32 Page 29 Page 29 Page 29 12 Section 3 Replace the Power Board 4 Begin 10 5 to 15 4 VDC at Power Board terminals 12 VDC amp GND 1 Fuse good Check condition of F1 fuse circuit board
34. 10 6 and Figure 10 7 page 81 to install the replacement water valve 1 Unplug the ice maker AC power cord from RV receptacle 2 Shut off the water supply to the water valve 3 Disconnect the BROWN wire and the WHITE wire at the solenoid coil Water Valve NOTE Section 10 81 Cycling the Ice Maker Manually Figure 10 8 14 AWG jumper wire 5 8 inch insulation removed from both ends 14 AWG insulated wire 8 to 10 inches long 12 VDC in BLACK 120 VAC BROWN 120 VAC WHITE 8 32 x 2 Screw 2 Spacer 2 Compression fitting Figure 10 7 Water valve bracket and electrical connections 12 VDC in RED Cycling the ice maker manually verifies the motor works the mold heater turns on and off the shut off arm travels to the OFF position the water valve opens for seven seconds and the shut off arm drops to the ON position Figure 10 8 illustrates the jumper wire needed for jumpering test points L and H Before starting shut off the water supply to the water valve and make sure the AC power cord is plugged into an energized receptacle To manually cycle the ice maker 1 Remove the ice bin and freezer shelf 2 Detach the ice maker from the evaporator plate Do not to pull on the wire harness 3 Rotate the ice maker so the module cover faces toward the freezer door then remove the cover Pull the jumper wire out when a click sound is heard or no later than 15 s
35. 11 7 and 5 Remove the reservoir compartment cover See Figure 11 8 6 Disconnect the dispenser water line at the reservoir See Figure 11 9 Allow water to drain into the container placed in step 4 7 Disconnect the water fill line from the reservoir See Figure 11 9 8 Remove the retaining screws then pull the reservoir out of the cabinet recess See Figure 11 9 and 9 Reverse steps 8 through 1 to install replacement reservoir Reservoir cover held in place with hook and loop tabs Figure 11 7 Draining reservoir before removal Figure 11 9 Reservoir fittings and retaining screws Figure 11 8 Cover reservoir compartment To remove pull out evenly on top and bottom edges To install place over opening and seat firmly Press down to disconnect fitting from reservoir Blue body Red body Press up to disconnect fitting from reservoir Retaining screw Retaining screw Section 11 93 LED Circuit Board Replacement Tools 2 Phillips Screwdriver 1 Power off the refrigerator 2 Remove the left hinge cover 3 Remove the striker plate 4 Remove water dispenser cover See Figure 11 10 5 Disconnect circuit board from circuit See Figure 11 11 A 6 Remove circuit board from bracket See Figure 11 11 B C and D 7 Reverse steps 6 through 1 to install replacement LED circuit boar
36. 14 JW4 JW6 D2 R9 R7 R24 R46 R4 R5 R23 R20 R18 R21 R21 JW7 JW9 JW10 JW8 R36 R41 R45 JW2 R441 R8 R10 JW3 R6 R40 R43 R42 R2 R38 R47 R30 R48 R35 R33 U1 LP1 Q1 Q2 Q6 C9 D10 R11 R12 C7 R16 R15 R17 R19 R13 R22 R32 R31 Z2 D7 R14 U4 C3 C5 U3 U6 JW11 Z4 MIN MAX RANGE HOLD H Hz REL mA A mV V V OFF A COM V mA A 1000V MAX 400mA MAX FUSED 10A MAX FUSED PEAK MIN MAX A CAT II 4 1 2 DIGITS 1 Seconds TRUE RMS MULTIMETER V V P1 6 P1 1 10 5 to 15 4 VDC 12 VDC in 12 VDC in F1 Fuse 5 Amp 100 B ANSI Z21 2 JW5 P3 RT424F12 12V 05 43 07 3 D5 R50 R49 07 3 07 3 07 3 4 C Q3 4 C D8 CPC E 94 V 0 P4 GND 12VDC Potter amp Brumfield T7CS1D2 05 5VDC 0544 700514 5A 120VAC CHINA D3 c 4 D6 3 07 R28 R 3 D13 07 3 R39 D1 N M 07 3 1237 0301 9 8 4 5 3 K3 R25 R27 R26 R29 C8 7 4 R 1 2 Potter amp Brumfield T77V1D10 09 CHINA CHINA 10A 120VAC 700514 10A 120VAC Potter amp Brumfield T77V1D10 09 30VDC RES 30VDC RES 700514 D4 R37 R34 4 6 5 D 12 D 11 Z3 C 1 Potter amp Brumfield T77V1D10 09 CHINA 10A 120VAC 30VDC RES
37. 5 1 COLD 9 COLDEST Screen 1 COLD 9 COLDEST Stored Fault History The second of two stored fault history screens It displays stored fault history using lit LED segments Segments fault descriptions are illustrated below 1 Thermistor disconnected mafunction 6 AC voltage over 135 volts 2 Flame present with gas valve off 5 Flame sensing Sr fault 7 No cooling sensed Pressing the MODE switch button displays screen 1 COLD 9 COLDEST Segment 5 The fault is logged in any operating mode if any of the following occurs 1 Problem in gas sense circuitry hardware 2 Gas valve drive circuit present when it is not supposed to be 3 Gas valve drive circuit is not present when it is supposed to be 4 Internal memory fault Segment 6 The fault is logged anytime AC voltage rises over 135 volts Segment 7 The high temperature limit switch opens when overheating is sensed in the cooling unit boiler area The system sensing algorithm still present and will sense a no cool condition however it will not lock out heat sources or display the no co fault code in normal display mode Screen 1 COLD 9 COLDEST Clear Stored Fault History This screen is used to erase stored fault history from screens four and five To clear fault history 1 Screen shows 1 COLD 9 COLDEST 2 Press and hold the SET TEMP switch button until 1 COLD 9 COLDEST appears on the screen 3
38. 7 0301 9 8 4 5 3 K3 R25 R27 R26 R29 C8 7 4 R 1 2 Potter amp Brumfield T77V1D10 09 CHINA CHINA 10A 120VAC 700514 10A 120VAC Potter amp Brumfield T77V1D10 09 30VDC RES 30VDC RES 700514 D4 R37 R34 4 6 5 D 12 D 11 Z3 C 1 Potter amp Brumfield T77V1D10 09 CHINA 10A 120VAC 30VDC RES 700514 JW4 JW6 D2 R9 R7 R24 R46 R4 R5 R23 R20 R18 R21 R21 JW7 JW9 JW10 JW8 R36 R41 R45 JW2 R441 R8 R10 JW3 R6 R40 R43 R42 R2 R38 R47 R30 R48 R35 R33 U1 LP1 Q1 Q2 Q6 C9 D10 R11 R12 C7 R16 R15 R17 R19 R13 R22 R32 R31 Z2 D7 R14 U4 C3 C5 U3 U6 JW11 Z4 56 Section 7 Cover 8 32 x 1 Hex head screw Base 8 32 x 1 Hex head screw 12 VDC in Spark sense electrode Assembly 100 B ANSI Z21 2 JW5 P3 RT424F12 12V 05 43 07 3 D5 R50 R49 07 3 07 3 07 3 4 C Q3 4 C D8 CPC E 94 V 0 P4 GND 12VDC Potter amp Brumfield T7CS1D2 05 5VDC 0544 700514 5A 120VAC CHINA D3 c 4 D6 3 07 R28 R 3 D13 07 3 R39 D1 N M 07 3 1237 0301 9 8 4 5 3 K3 R25 R27 R26 R29 C8 7 4 R 1 2 Potter amp Brumfield T77V1D10 09 CHINA CHINA 10A 120VAC 700514 10A 120VAC P
39. 700514 JW4 JW6 D2 R9 R7 R24 R46 R4 R5 R23 R20 R18 R21 R21 JW7 JW9 JW10 JW8 R36 R41 R45 JW2 R441 R8 R10 JW3 R6 R40 R43 R42 R2 R38 R47 R30 R48 R35 R33 U1 LP1 Q1 Q2 Q6 C9 D10 R11 R12 C7 R16 R15 R17 R19 R13 R22 R32 R31 Z2 D7 R14 U4 C3 C5 U3 U6 JW11 Z4 AC heater wires See NOTE MIN MAX RANGE HOLD H Hz REL mA A mV V V OFF A COM V mA A 1000V MAX 400mA MAX FUSED 10A MAX FUSED PEAK MIN MAX A CAT II 4 1 2 DIGITS 1 Seconds TRUE RMS MULTIMETER V V Figure 3 3 Measuring DC voltage across Yellow Green and Green wires all models 10 5 to 15 4 VDC Yellow Green Green 12 VDC in 12 VDC in 16 Section 3 AMP MIN MAX RANGE HOLD H Hz REL mA A mV V V OFF A COM V mA A 1000V MAX 400mA MAX FUSED 10A MAX FUSED PEAK MIN MAX A CAT II 4 1 2 DIGITS 1 Seconds TRUE RMS MULTIMETER V V MIN MAX RANGE HOLD H Hz REL mA A mV V V OFF A COM V mA A 1000V MAX 400mA MAX FUSED 10A MAX FUSED PEAK MIN MAX A CAT II 4 1 2 DIGITS 1 Seconds TRUE RMS MULTIMETER V V AMP Figure 3 4 Measuring DC voltage across White Violet wire and Green wire at the optical controls display assembly circuit
40. 7210 Fax 1 937 497 3183 World Wide Web www norcold com cda section 1 introduction The following information will be required to process technical help requests if the product is in warranty and has not been registered with NORCOLD Customer last and first name Address City State Zip Code Telephone number E mail address optional Refrigerator model number and serial number RV Make Model and Year Complete RV VIN number Floor plan number description RV date of purchase IMPORTANT www norcold com cda subscription are available only to service centers 4 Section 1 Figure 1 1 Location of refrigerator information label 1210LRIM label illustrated 1 COLD 9 COLDEST ON SET TEMP MODE ON OFF NORCOLD INC SIDNEY OHIO pourle GPL equipped por le propan TESTED FOR LP GAS EQUIPPED FOR PROPANE Teste 5 5 Amps 660 Watts SUPPLY alimentati 11 WC 10 5 WC BURNER bruleur 120VAC 60Hz 12VDC 2 54 LBS REFRIGERANT frigorigene R707 TEST PRESSURE D ESSAI 800 PSI 3 8 Amps 45 Watts SERIAL N de serie XXXXXXX MODEL N de modele GROUP CODE code de INPUT puissance 1210LRIM For recreational vehicle installation Min Installation clearance 0 sides top bottom back Install only with Kit 3 See installation instructions Pour installation vehicule de plaisance Degagement minimum pour I i
41. 7V1D10 09 CHINA 10A 120VAC 30VDC RES 700514 JW4 JW6 D2 R9 R7 R24 R46 R4 R5 R23 R20 R18 R21 R21 JW7 JW9 JW10 JW8 R36 R41 R45 JW2 R441 R8 R10 JW3 R6 R40 R43 R42 R2 R38 R47 R30 R48 R35 R33 U1 LP1 Q1 Q2 Q6 C9 D10 R11 R12 C7 R16 R15 R17 R19 R13 R22 R32 R31 Z2 D7 R14 U4 C3 C5 U3 U6 JW11 Z4 AC heater wires See NOTE MIN MAX RANGE HOLD H Hz REL mA A mV V V OFF A COM V mA A 1000V MAX 400mA MAX FUSED 10A MAX FUSED PEAK MIN MAX A CAT II 4 1 2 DIGITS 1 Seconds TRUE RMS MULTIMETER V V Figure 3 7 Location of wire harness White Red wire and Blue wire in P1 Optical Control Display wire harness plug and Power Board P1 and P2 Connectors Blue P2 Power board connector P1 Power board connector White Red To check White Red wire and Blue wire for continuity 1 Disconnect P1 and P2 from Power Board 2 Disconnect Optical Control Assembly P1 from circuit board 3 Jump White Red wire and Blue wire at Power Board P1 and P2 connector 4 Connect ohm meter to White Red wire and Blue wire contacts at Optical Control Display wire harness connector Jumper into P1 9 and P2 3 Figure 3 8 Measuring DC voltage across the White Red and White Violet wire 10 5 to 15 4 VDC White Violet
42. 9 D10 R11 R12 C7 R16 R15 R17 R19 R13 R22 R32 R31 Z2 D7 R14 U4 C3 C5 U3 U6 JW11 Z4 AC Fuse The AC fuse location illustrated on Figure 6 14 is an 8 amp fast acting 1 4 x 1 1 4 x 1 AGC fuse Figure 6 15 illustrates how to check fuse continuity 120 Volt AC Heaters Two 120 volts AC heaters generate the heat load required for AUTO AC and AC manual mode operation Each heater is rated for 225 watts 120 volt AC Figure 6 16 shows the AC heaters fully seated in the heater tubes Each heater has a resistance value of 58 to 68 ohms at ambient temperature To replace heater s the refrigerator has to be removed from the enclosure MIN MAX RANGE HOLD H Hz REL mA A mV V V OFF A COM V mA A 1000V MAX 400mA MAX FUSED 10A MAX FUSED PEAK MIN MAX A CAT II 4 1 2 DIGITS 1 Seconds 87 TRUE RMS MULTIMETER III 00 0 Figure 6 14 AC fuse location on power board Figure 6 15 Checking the AC fuse for continuity AC fuse AGC 8 amp AC heaters Figure 6 16 AC heaters installed in heater tubes WARNING Burn hazard Allow the canister and heaters to cool down before attempting removal and replacement Stop bead Section 7 55 section 7 electronic controls Power Board Figure 7 1 shows a front view of the power board Inputs outputs monitoring information and diagnostic functions are sent and re
43. COLD 9 COLDEST Screen 1 COLD 9 COLDEST AC Voltage Input Displays AC voltage input to power board through lit LED segment The assigned LED segments and information are illustrated below 1 Over 132 volts AC 4 108 to 132 volts AC 7 Below 108 volts AC Pressing the MODE switch button displays screen 1 COLD 9 COLDEST To return display to AUTO AC or LP Mode 1 Press and hold down the MODE and SET TEMP switch buttons at the same time or power the refrigerator OFF and back ON 2 Release the switch buttons when the selected operation mode display Section 10 77 section 10 ice MAker Ice Maker Shut off arm OFF ON Figure 10 1 Ice maker Specifications Cycle duration 3 5 to 7 minutes Water fill capacity 4 7 fl oz 140 mL Ice yield 3 5 lbs 24 hr approximate Electrical rating 185 W 115 VAC 60 Hertz Amperage A draw Cycle on heater on 1 6 A Cycle on heater off 0 3 A Cycle off No amperage draw Motor 1 5 W 8800 ohms Mold heater 185 W 72 ohms The ice maker illustrated in Figure 10 1 is supplied AC power through a wire harness It is ON when the shut off arm is lowered to the down position and O
44. E ON OFF SET TEMP on 1 COLD 9 COLDEST 1 COLD 9 COLDEST Begin Are heaters connected correctly to the power board 1 Resistance 58 to 68 ohms 2 Connect the heaters to power board Black wire leads terminals to AC_HT_ LO and AC_HT_LO_2 Yellow wire leads terminal to AC_HT_ HI and AC_HT_HI_2 NO Check each heater resistance Resis tance range is 58 to 68 ohms YES NO Replace heaters Replace power board The AC HE fault is recorded in either the AUTO or Manual AC mode The following may apply AUTO MODE When AC heaters current input falls below 0 5 amperes and AUTO LP has locked out the fault is set and recorded to non volatile memory approximately 25 seconds after it occurs providing there is a call for cooling AC manual mode When AC heater current input falls below 0 5 amperes the fault is set and recorded to non volatile memory approximately 25 seconds it occurs provided there is a call for cooling IMPORTANT YES Section 3 21 The AC rE fault is recorded in all operating modes any time AC heater current is sensed on when it is supposed to be off The AC rE code displays and is recorded in non volatile memory approximately 25 seconds after the fault occurs IMPORTANT MODE ON OFF SET TEMP on 1 COLD 9 COLDEST 1 COLD 9 COLDEST Power board AC heater relay contacts stuck in the closed position AC current to heaters is being sensed by the controls Re
45. E TEMP SET on 1 COLD 9 COLDEST Figure 8 2 Diagnostic screen 5 segment 7 no cooling sensed The cooling system monitoring control monitors the cooling performance through the thermistor Monitoring is active when fin temperature second fin from right on fin assembly is higher than 50 degrees Fahrenheit 10 degrees Celsius and the controls are call for cooling The initial fin temperature monitoring period is 120 minutes 2 hours with temperature samples taken at 10 minute intervals If the cooling system monitoring does not sense a drop in fin temperature approximately 1 degree Fahrenheit or 0 56 degree Celsius in two hours it powers off the active heat source for 10 minutes After the end of the 10 minute rest period the system powers on the heat source for another 40 minutes During the 40 minutes monitoring period the cooling system monitoring samples fin temperature every 10 minutes for a drop in fin temperature Cooling System Monitoring 64 Section 8 Resettable high temperature limit switch replacement for non resettable switches Canister The purpose of the high temperature monitor system is to prevent damage to the cooling unit due to an overheating condition in the boiler An overheating condition may be cause by one or a combination of the following Insufficient or obstructed ventilation Inadequate installation in enclosure Heat deflector cap blocked by insu
46. FF when the shut off arm is raised to the up position Operation The left freezer temperature determines the efficiency of the ice maker The colder the temperature in the freezer the faster the water in the mold will freeze To harvest the ice the temperature in the freezer needs to be colder than 12 degrees Fahrenheit 11 1 degrees Celsius The thermostat attached to the mold senses the mold temperature At approximately 17 to 14 degrees Fahrenheit 8 3 to 10 degrees Celsius the thermostat energizes the stepper motor and the heater As the motor turns the ejector blades begin to make contact with the top of the ice cubes The motor rotates back and forth causing the blades to exert pressure on the ice cubes as the mold heater warms the bottom of the mold Once the ice cubes are freed the motor continues to turn the ejector which in turn sweeps the ice cubes out of the mold and into the ice bin At the same time the shut off arm begins to swing up which indicates the end of ice harvesting This begins a new cycle As the ejector blades point to the 12 o clock position the water valve opens for approximately seven seconds and refills the mold with approximately 4 7 fluid ounces of water After the mold is refilled the shut off arm drops to the ON position When the thermostat senses mold temperature to be 17 to 14 degrees Fahrenheit 8 3 to 10 degrees Celsius the cycle starts again Ice Yield The ice mak
47. ceived through a wire harness linking the power board with the optical control assembly NOTE 1210 1211 with ice maker water dispenser It may be necessary to move the water valve out of the way to remove and install the cover Base The base illustrated in Figure 7 2 is attached to the refrigerator back plate with two 8 32 x 1 hex head screws Four locking tabs hold the power board to the base Cover Figure 7 3 shows a front view of the cover Two 8 32 x 1 hex head screws hold the covers to the refrigerator back plate Figure 7 4 page 56 shows the cover mounted over the power board with external connections in place Figure 7 5 page 56 shows the power board with the cover removed and all the internal connections in place NOTE The wire harness is foamed into the cabinet It is not a replaceable component Figure 7 1 Power board Figure 7 2 Base power board Figure 7 3 Cover power board Locking tab 4 Base 8 32 x 1 Hex head screw 2 This edge up Troubleshooting Refer to Section 3 for troubleshooting information 100 B ANSI Z21 2 JW5 P3 RT424F12 12V 05 43 07 3 D5 R50 R49 07 3 07 3 07 3 4 C Q3 4 C D8 CPC E 94 V 0 P4 GND 12VDC Potter amp Brumfield T7CS1D2 05 5VDC 0544 700514 5A 120VAC CHINA D3 c 4 D6 3 07 R28 R 3 D13 07 3 R39 D1 N M 07 3 123
48. d Do not use a two prong adapter to connect the refrigerator to the AC outlet Do not modify bypass or eliminate any of the refrigerator s electrical components electronic circuits or propane gas system components including AC and DC heaters To prevent shock hazard disconnect the AC power cord from the electrical outlet before attempting to remove the power board cover Electrical connections and repairs to electrical components must comply with applicable codes Use an anti static grounding strap before attempting to handle remove or install the power board Cooling System Safety Do not try to repair or recharge the cooling system The cooling system is a sealed and pressurized It is not rechargeable Do not bend drop weld drill puncture saw or strike the cooling system The cooling system is sealed and pressurized Wear breathing protection and gloves when handling a leaking cooling system The cooling system contains ammonia hydrogen and sodium chromate n Ammonia can cause severe skin and eye burns n Hydrogen is highly flammable and ignites and burns with intense flame n Certain chromium compounds such as sodium chromate are carcinogenic LP Gas Safety Do not smoke light fires or create sparks when working on the propane gas system Do not use an open flame for leak testing any of the propane gas system components
49. d Striker plate Hinge cover Retaining screws Figure 11 10 Cover water dispenser Figure 11 11 LED circuit board replacement LED Water dispenser circuit board plug C 3C5 K 16 3 A 250V T105 5E4 1885H3 Circuit board stand off Push in the tab here to release circuit board Pull the circuit board up past the tab 1 2 Water dispenser circuit board A C D B 94 Section 12 section 12 wiring diAgrAMs And pictoriAls Figure 12 1 Wiring diagram Section 12 95 Figure 12 2 Wiring pictorial 96 Section 12 1 120 VAC Hot Smooth 2 120 VAC Neutral Smooth 3 Ground connection 4 Thermal Fuse 5 Solenoid Coil Water valve 6
50. degrees Celsius On units with non resettable switch replace the switch with a resettable switch On units with resettable switches reset the switch In both cases troubleshoot for the L1 oP fault cause IMPORTANT MODE ON OFF SET TEMP on 1 COLD 9 COLDEST 1 COLD 9 COLDEST Begin Refrigerator cooling before L1 Op fault displayed 1 Burner overheated Blue 2 1 Replace reset the high temperature limit switch 2 Test cooling system performance on AC and LP gas operation NO YES Heat deflector cap and or burner box blocked with insulation 3 YES YES Go to page 28 NO NO IMPORTANT Make sure refrigerator is operating within level requirements 1 Clear insulation 2 Replace reset the high temperature limit switch 3 Set controls to LP operation and test cooling system performance 28 Section 3 Switch okay From page 27 Check fans switch NO YES Refer to Section Cooling System Troubleshooting chart Section 8 page Fans okay YES NO Obstructions blocking air flow through the enclosure NO YES Check fans operation 1 Replace fans 2 Replace reset high temperature limit switch 3 Test cooling system performance on AC and LP gas operation 1 Clear obstructions 2 Replace reset high temperature limit switch 3 Test cooling system performance on AC and LP gas operation 1 Replace fan thermostatic switch 2
51. ease b Spring pressure should extend the pin fully when the contact is released Left door hinge side Contact point on cabinet Spring pins Do not attempt to remove the spring pin flange from door The flange is not a replaceable part Attempting to remove the flange will disconnect the wires from the pins housing resulting in door replacement CAUTION Spring pin replacement Section 6 53 AC Power Requirements AUTO AC or AC mode operation requires 108 to 132 volts AC Voltage is to be supplied through a 2 pole 3 wire 20 amp grounding type receptacle Figure 6 12 AC Power cord 1210 1211 no ice maker Three prong grounding style plug 8 32 x 1 8 32 x 1 Figure 6 13 AC Power cord 1211 IM ice maker Three prong grounding style plug 8 32 x 1 8 32 x 1 To ice maker wire harness black To ice maker wire harness white To water valve solenoid coil Ground lug Ground lug AC Power Cord 1210 1211 The AC power cord for a 1210 model without an ice maker is shown in Figure 6 12 The cord is attached to the refrigerator back plate with a 8 32 x 1 hex head screw The cord ground wire lug is also attached to the back plate with a 8 32 x 1 hex head screw AC Power Cord 1211IM Ice Maker The AC power cord for a 1211 model with an ice maker is shown in Figure 6 13 The cord is attached to the refrigerator back plate with a 8 32 x 1 hex head screw The cord ground wire lu
52. eater resistance ambient temperature per heater 64 AUTO and AC manual mode operation voltage requirement 108 to 132 VAC AC fuse F2 in power board 8 A 1 4 in x 1 1 4 in AGC style fast acting Ice maker IM models only 180 W 115 VAC Water valve ice maker IM and IMD models only 10 W 115 VAC LP gas propane Operating pressure 10 5 to 11 5 in w c Btu hr 7 slot burner LP 18 orifice 2400 Btu hr 11 in w c Flame sensing Electronic through spark sense electrode Electrode tip to burner air gap 1 8 to 3 16 in section 2 specificAtions 8 Section 2 This page intentionally left blank Section 3 9 section 3 Quick reference trouble shooting guide Problem Probable Cause Reference Blank display Refrigerator does not turn ON Page 12 12 volt DC not connected to power board Loose broken connector Power board F1 fuse open blown Page 12 Page 14 Poor cooling on AUTO AC or AC manual mode AC voltage less than 108 volt One AC heater failed open Page 28 Page 20 Burner failed to ignite
53. econds after jumpering terminals T and H Failure to remove jumper wire may damage the ice maker WARNING 4 Jump test points T and H See Figure 10 9 page 82 Figure 10 10 page 82 illustrates the cycle events after jumpering test points T and H Jumpering the points bypasses the thermostat which causes the motor and the mold heater to come on NOTE 82 Section 10 628135 D O N O T R O T A T E 628 35 8 DISCONNECT POWER TO MODULE 106 626649 IM REMOVE S W2 01 13 06 185W 115V 60 HZ Wire jumper Figure 10 9 Cycling the ice maker manually Shut off arm On position 6 Pull out the jumper wire when a click sound is heard or no later than 15 seconds after jumpering test points T and H a The motor turns the ejector in a clockwise direction and the mold heater energizes b The heater de energizes as the ejector fingers pass through the 6 o clock position c The shut off arm begins to move up to the OFF position as the ejector fingers pass through the 9 o clock position d The opening of the water valve takes place as the ejector fingers pass through the 12 o clock position The valve closes approximately seven seconds later e The shut off arm drops to the ON position after the water valves is de energized f The ejector parks at the 2 o clock position g The cycle continues when the thermostat
54. er can produce up to 3 1 2 pounds per day depending on usage and freezer door openings 78 Section 10 Thermal fuse Black White Brown Green Black line voltage female quick connect Brown to water valve solenoid coil female quick connect Green ground with lug Tab style locking connector Thermal fuse Flat side clipped to mold Figure 10 3 Wire harness White neutral male quick connect Ice Maker Wire Harness Figure 10 3 illustrates the wires color coding and application Figure 10 2 illustrates the AC power cords installed on 1210 IM and 1211 IM The cord connect to the ice maker four wire harness AC power to the ice maker is to be supplied through a 2 pole 3 wire 20 amp grounding type receptacle AC Power Cord Figure 10 2 AC power cords 1211 IM 1210 IM Components A four wire harness supplies AC power to the ice maker module The ice maker and its harness are in no way connected to the refrigerator wire harness to the power board or to the optical control display assembly IMPORTANT Section 10 79 Figure 10 4 Water fill line and water fill tube connection Cup Water fill line Foil style heater Water fill tube 1 2 in clamp Figure 10 4 illustrates the water fill line The fill line connection at the water valve is a 1 4 inch plastic compression fitting The connection at the water fill tube is made with a 1 2 inch hose clamp The
55. er tube from the orifice adapter to prevent damaging the tube or orifice adapter fitting A damaged burner tube or orifice adapter fitting creates a potential for gas leaks WARNING Do not insert any type of cleaning tool wire or drill bit through the orifice Inserting of any type of cleaning tool wire or drilling damages the orifice and creates fire hazard WARNING Burn hazard Allow the burner box and orifice and burner assembly to cool before attempting removal and disassembly Figure 5 6 Burner and orifice assembly Tools 2 Medium Phillips Screwdriver 1 4 Nutdriver 1 2 Open end wrench 5 8 Open end wrench Small wire brush Scouring pad Denatured alcohol Leak Test Solution Section 5 45 14 Connect the burner tube to the orifice adapter fitting Thread the fitting by hand then finish tightening using two wrenches 15 Install the burner box cover and fasten in place the retaining screw 16 Open the valve s at the LP gas container s 17 Open the manual shut off at the gas valve 18 Turn on the refrigerator then select the LP gas mode 19 Leak test LP gas connections WARNING Always use two wrenches to install the orifice assembly into the burner to prevent damaging the orifice adapter assembly or burner threads A damaged orifice adapter for burner creates a potential for gas leaks Burner retaining screw 8 32 X 3 8 Phillips head Figure 5 7 Installing b
56. from the enclosure to test the thermostatic switch In sidewall installations the thermostatic switch can be tested by removing the upper sidewall vent IMPORTANT Section 6 49 Black Y jumper Red Y jumper Fan RED lead 12 VDC Negative 12 VDC positive to thermostatic switch Fan RED lead Fan BLACK lead Fan BLACK lead to wire harness connector Fan replacement Tools 1 4 nut driver 2 Phillips tip screwdriver To remove the existing fan 1 Disconnect the existing fan positive wire connector and negative wire at their respective Y jumper See Figure 6 7 2 Remove fan and bracket assembly from cooling unit 3 Remove the existing fan and bracket from sump Save the screws and spacers to reinstall the new fan 4 Reverse steps 3 to 1 and refer to Figure 6 7 to install replacement fan Figure 6 7 Fans wiring and connections Fan replacement requires removal of the refrigerator from the enclosure The RV manufacturer may have installed additional brackets and screws Always double check for additional screws and brackets before attempting to remove the refrigerator from the enclosure IMPORTANT 50 Section 6 Flapper Assembly The flapper assembly illustrated in Figure 6 8 is hinged to the left fresh food compartment door It acts as the vertical sealing surface for the fresh food compartment doors inboard gasket T
57. g is also attached to the back plate with a 8 32 x 1 hex head screw As illustrated in Figure 6 13 two pigtails originating at the power board plug end connect to the ice maker wire harness The third pig tail connects to the water valve solenoid coil terminal Do not remove the grounding prong from the refrigerator AC power cord Do not use a two prong adapter to connect the AC cord to an AC outlet WARNING 54 Section 6 100 B ANSI Z21 2 JW5 P3 RT424F12 12V 05 43 07 3 D5 R50 R49 07 3 07 3 07 3 4 C Q3 4 C D8 CPC E 94 V 0 P4 GND 12VDC Potter amp Brumfield T7CS1D2 05 5VDC 0544 700514 5A 120VAC CHINA D3 c 4 D6 3 07 R28 R 3 D13 07 3 R39 D1 N M 07 3 1237 0301 9 8 4 5 3 K3 R25 R27 R26 R29 C8 7 4 R 1 2 Potter amp Brumfield T77V1D10 09 CHINA CHINA 10A 120VAC 700514 10A 120VAC Potter amp Brumfield T77V1D10 09 30VDC RES 30VDC RES 700514 D4 R37 R34 4 6 5 D 12 D 11 Z3 C 1 Potter amp Brumfield T77V1D10 09 CHINA 10A 120VAC 30VDC RES 700514 JW4 JW6 D2 R9 R7 R24 R46 R4 R5 R23 R20 R18 R21 R21 JW7 JW9 JW10 JW8 R36 R41 R45 JW2 R441 R8 R10 JW3 R6 R40 R43 R42 R2 R38 R47 R30 R48 R35 R33 U1 LP1 Q1 Q2 Q6 C
58. he LP gas system Do not smoke or light fires Extinguish all open flames Do not use matches lighters or an open flame to test for LP gas leaks LP gas is highly flammable and explosive Do not connect the refrigerator directly to the LP gas container Always use an approved LP gas regulator to supply propane gas to the refrigerator Do not modify any of the refrigerator LP gas system components piping or fittings Do not cross thread fittings Be careful when connecting or disconnecting components piping or fittings Always use two wrenches to loosen or tighten fittings to prevent damaging components piping or fittings Damaged components piping or fittings create the potential for gas leaks Leak test all fittings that have been taken apart or disturbed during servicing repairing or replacing components WARNING The LP gas system is for propane gas at a nominal pressure of 11 inches water column w c Propane gas pressures between 10 5 and 11 1 5 w c provide necessary amount of gas for efficient combustion and heat generation Gas pressure below 10 5 w c Gas pressure below 10 5 w c results in a weak flame with low heat input to the cooling system boiler Low heat input directly affect cooling performance Additionally the weak flame may not be sensed by the controls flame sensing circuit which will cause the controls to shut off the gas valve lock
59. he flapper is equipped with a 12 volt DC moisture reduction heater The heater is supplied power through wires foamed into the door liner The heater is energize when the spring pins on the hinge side of the door make contact with the permanent contacts on the side of the fresh food cabinet For the heater to power on the left fresh food compartment door has to be fully closed Powering on the refrigerator automatically energizes the flapper heater circuit Heater operation can be detected by touching the exterior surface of the flapper assembly The overall surface should be slightly warm to the touch If the flapper surface feels cold to the touch or is wet troubleshoot the heater as follows 1 Check for bent broken or missing spring pins 2 Check door alignment If needed align door so all spring pins make full contact with the center of the contacts on the cabinet 3 Check heater resistance Resistance reading should be approximately 40 6 to 47 2 ohms Replace the flapper assembly if the heater is open shorted or if the resistance is not within the values given in step 3 Figure 6 8 Flapper assembly left door fresh food compartment Flapper assembly Left door Fresh food cabinet Contacts Spring pins Section 6 51 Connector To disconnect Flapper assembly TOP Hinge screw Hinge screw Top hinge Bottom hinge BOTTOM Up to remove Down to install Hinge fits ove
60. hows the screen number location and LED segments numbering Setting Display to Diagnostics To set the display to diagnostics 1 Press and hold down the MODE and SET TEMP switch buttons at the same time 2 Release the switch buttons when 1 COLD 9 COLDEST displays 3 Within two seconds 1 COLD 9 COLDEST displays on the screen Displaying screens 1 COLD 9 COLDEST through 1 COLD 9 COLDEST 1 Press the MODE button 2 Release the switch button when the next or the desired screen number displays Returning the Display to Normal Mode 1 Press and hold down the MODE and SET TEMP switch buttons at the same time 2 Release the switch buttons when the active operation mode displays 1 COLD 9 COLDEST 1 3 6 2 5 7 4 Screen Number 1 0 Segments Number Figure 9 1 Optical control display screen and segments numbering NOTE Powering the refrigerator OFF and back ON also returns the optical control display to its normal display mode 74 Section 9 Screen 1 COLD 9 COLDEST All Diagnostics LED On Confirms display is set to Diagnostics Within five seconds the screen number is replaced by 1 COLD 9 COLDEST All LED segments should be lit Replace the optical control display assembly if any segment fails to light Pressing the MODE switch button displays screen 1 COLD 9 COLDEST Diagnostic Screens Information
61. ied water through a 1 4 compression style fitting which feeds both the water dispenser valve and the ice maker water valve Ice Maker Water Valve Figure 10 21 and Figure 10 22 illustrate and provide information on the ice maker water valve Water Dispenser Valve For information on the water dispenser water valve refer to Section 11 AC power connections to ice maker Figure 10 21 Ice maker and water dispenser modular valve Back View water in To remove Shut off arm To install Figure 10 20 Shut off arm removal and installation Invensy N 86 624516 W1 12 VDC 10 W W2 120 VAC 60Hz 15 W W1 W2 To water dispenser reservoir Red solenoid coil ice maker 120 VAC 8 32 x 1 screws Figure 10 22 Ice maker and water dispenser modular valve Skewed side view To ice maker Blue solenoid coil water dispenser 12 VDC Section 11 89 section 11 wAter dispenser The water dispenser is an optional system installed at the factory The main components are the divider mounted water dispenser Figure 11 1 the reservoir Figure 11 2 and the water valve Figure 11 3 Figure 11 1 Water dispenser external view Figure 11 2 Reservoir in cabinet recess and cover Figure 11 3 12 volt DC solenoid operated water valve Water valve BLUE solenoid coil Cover attached with hook and loop tape Reservoir 27 fl oz capacity 90 Section 11 The
62. is fully seated and captured in the light fixture clips 5 Reinstall the light cover 6 Power on the refrigerator Section 6 47 Light thermistor wire assembly replacement To replace the light thermistor assembly 1 Power off the refrigerator 2 Detach the thermistor from the fin Location is illustrated in Figure 6 3 3 Remove the light cover 4 Unplug the light thermistor assembly connector from the wire harness 5 Disconnect the light wires from the light fixture See Figure 6 4 6 Connect the replacement light thermistor assembly light wires to the light fixture See Figure 6 4 7 Plug the replacement light thermistor assembly connector into the wire harness 8 Reinstall the light cover 9 Attach the thermistor to the fin to the second fin from the right and position it 1 to 1 1 2 inch from the top edge of the fin 10 Power on the refrigerator Light Thermistor Wire Assembly The light and thermistor share a modular connector Unplugging the connector from the circuit interrupts power to the light and disconnects the thermistor from the temperature sensing circuit 1 COLD 9 COLDEST ON SET TEMP MODE ON OFF 1 COLD 9 COLDEST Fresh food compartment Left freezer Right freezer Left door Right door Right light switch Left light switch Thermistor location Light Figure 6 3 Light switches and thermistor location Figure 6 4 Light thermistor assembly c
63. isplay overlay ribbon cable plugged incorrectly See Figure 3 6 page 16 Controls okay Go to page 14 NO NO NO YES YES NO Detach the Optical Control Assembly from the divider and leave it connected to the wire harness YES Able to display and change operation MODE 8a NO YES 5 Wire harness connector not fully plugged in and locked into P1 Power Board P1 con nector Loose or broken wire termi nals Repair as needed then recheck for voltage 1 Plug wire harness connector back into the P1 Power Board connector 2 Check for voltage across the Yellow Green wire and Green terminals as shown in Figure 3 3 page 15 Voltage output NO YES YES Fault in Optical Control Display overlay Replace Optical Control Display assembly 14 Section 3 11 If possible make repairs If repairs are not suc cessful or cannot be made call Norcold Technical Support 1 800 444 7210 for assistance From page 13 NO 10 Continuity through the Wire Harness White Red wire 9 Continuity through the Wire Harness Blue wire 1 Plug the wire harness back into the Power Board P1 connector 2 Connect volt meter probe to the White Red and the probe to the White Violet wire See Figure 3 8 page 17 3 Press and release the OFF ON switch button to turn ON refrigerator 12 NO YES NO YES NO YES YES Controls okay 1 Unplug
64. ket Screw absorber bracket Screw absorber bracket Permagum sealer Wire tie Screw Wire tie Power board cover 7 slot burner Dip cup Fans 2 Thermostatic switch Fans Cut tape along the 4 edges WRAPPER Gas valve Water Valve Section 8 71 Figure 8 7 Sealant application on cabinet opening sides Apply a bead approximately 1 2 inch wide x 1 2 inch thick Cut Thermal Mastic sealant tube to dispense a bead approximately 3 4 inch wide x 1 2 inch thick Figure 8 6 Sealant application on evaporators Installing Cooling Unit into Cabinet 1 Make sure the ice maker water line wiring and fan wiring are out of the way on the opposite side of the flue tube Do not attempt to install cooling unit in the the enclosure without the assistance of an able person Attempting the installation without additional help may cause personal injury and or extensive property damage WARNING 2 Carefully lift the cooling system and align same over the cabinet opening 3 Have an assistant insert the drain hose through the drain hose opening then hold the hose straight up 4 Lower foam plug evenly into the cabinet opening 5 Seat the cooling unit firmly into the cabinet by applying even pressure over the wrapper 6 Place the ice maker water tube IM models and wiring between the cabinet and absorber coils 72 Section 8 7 Install condenser brackets screws Tighten each sc
65. l mode operation 6 Leak check all of the refrigerator gas connections No leaks allowed 7 Place refrigerator in service WARNING Always use two wrenches to loosen or tighten fittings to prevent damaging components piping or fittings Damaged components piping or fittings create the potential for gas leaks 17 Install the gas valve and burner assembly 18 Install the burner box cover 19 Install the drip cup 20 Install the ice maker water valve IM models then reconnect wiring and tubing 21 Install cable ties on wiring protector 22 Cover the drain hose penetration with Permagum sealer Checking for gas leaks after installation Section 9 73 section 9 diAgnostics Diagnostic Mode The diagnostic mode is a tool incorporated in the controls This tool is designed to assist in verifying temperature inputs outputs and to retrieve recorded fault stored by the controls The diagnostic mode has ten diagnostic channels commonly known as screens Each screen has a particular function For example screen three 3 displays fin temperature and screens four 4 and five 5 display stored fault history The optical control display employs dual 7 segment LED displays to show information The screen number always shows in the left side of the display Illuminated segments to the right side of screen number provide stored fault history inputs outputs and voltage status Figure 91 s
66. lation Heat deflector cap jammed against flue opening Exceeding off level limits Operation with two heat sources active Cooling unit blockage The high temperature limit switch acts as a temperature supervising device This switch is positioned near the boiler to provide the best possible monitoring of temperature Figure 8 3 illustrates the original high temperature limit switch configuration with a resettable switch Figure 8 4 illustrates the present configuration of the high temperature limit switch at the time of this publication If the boiler normal operating temperature begins to rise to an abnormal level the electrical contact in the switch opens to prevent the boiler from overheating The controls are programmed to detect when the switch is open If the switch is open or not connected to power board terminals LIMIT IN and LIMIT OUT the controls Fault code oP L1 displays Stop AC and LP gas operation Record fault in non volatile memory High Temperature Monitor System Figure 8 3 Location of original high temperature limit switch resettable switch shown Figure 8 4 The present configuration of the high temperature limit switch Section 8 65 Cooling System Replacement The cooling system has to be tested for proper operation Test results need to show that both the freezer and the fresh food cabinet do not cool in AUTO mode AC ma
67. m distance between the bottom of the enclosure and the top of the upper vent opening 62 in Vent even or below enclosure floor Enclosure depths of more than 24 in and less then 26 in Bend of baffle flush with bottom edge of vent door frame 621156 Vent Aligned horizontally with lower vent Distance between bottom of condenser fins and top of baffle 0 1 4 in Opening between condenser fins and baffle 0 1 4 in Distance between inner wall and cooling system less than 2 in 0 1 4 in 0 1 in 38 Section 4 Opening between condenser fins and baffle 0 1 4 in Distance between inner wall and cooling system 2 in or more Distance between bottom of condenser fins and top of baffle 0 1 4 in 621156 Vent Aligned horizontally with lower vent Aluminum or galvanized steel sheet full width baffle Top surface of baffle flush with bottom edge of vent frame Minimum distance between the bottom of the enclosure and the top of the upper vent opening 62 in Distance between the top of the lower vent opening and bottom of solid box baffle 4 1 4 to 4 3 4 in 621156 Vent Vent even or below enclosure floor Enclosure depths of 26 in or more Aluminum or galvanized steel sheet full width of enclosure 0 1 in 0 1 4 in Fans Figure 4 6 Sidewall venting Enclosure depth more than 26 in Box baffle required Section 5 39 section 5 lp gAs systeM When working on or near t
68. n Altering the angle of the condenser Unauthorized modifications Unauthorized modifications include Removal of enclosure baffles Removal of insulating canister Installation of insect screen over intake and or exhaust vent openings By passing or tampering with the control Relocation of fans and or thermostatic switch Flue baffle Flue Flue Canister Flue baffle wire O shape flue cap Figure 8 1 Flue and associated components 7 slot burner LP18 orifice Section 8 63 If fin temperature remains above 50 degrees Fahrenheit 10 degrees Celsius the cooling system monitoring records the fault in non volatile memory Figure 8 2 illustrates the fault segment that appears in diagnostic mode screen 5 See Section 9 for Diagnostics information Cooling system monitoring is inactive when fin temperature is 50 degrees Fahrenheit 10 degrees Celsius or lower It does not activate when Fin temperature is below 50 degrees Fahrenheit 10 degrees Celsius The thermistor is disconnected from the circuit is open no resistance or is shorted Either one or both of the fresh food compartment doors is sensed open Sampling resumes 10 minutes after the door is closed Both AC heaters failed open AC voltage is lower than 108 volts AC Fin frost management active 7 No cooling sensed 1 COLD 9 COLDEST ON OFF MOD
69. n 10 83 Water Fill Adjustment The water fill adjustment is set at the factory The production of thin ice cubes indicate not enough water in the mold The ejector rocking back and forth may indicate fused ice cubes due to too much water in the mold Both of these conditions may require adjusting the water fill to increase or decrease the time the water valve remains open To adjust the water fill capacity screw 1 Remove the ice bin and freezer shelf 2 Detach the ice maker from the evaporator plate Do not to pull on the wire harness 3 Rotate the ice maker so the module cover faces toward the freezer door then remove the cover 4 Rotate the ice maker so the shut off arm is facing towards the freezer door 5 Locate the contact opening shown in Figure 10 12 628135 D O N O T R O T A T E 628 35 8 DISCONNECT POWER TO MODULE 106 626649 IM REMOVE S W2 01 13 03 185W 115V 60 HZ 14 AWG INSULATED Figure 10 11 Jumpering test points V and L 628135 D O N O T R O T A T E M A N U A L L Y 628 35 8 DISCONNECT POWER TO MODULE 106 626649 IM REMOVE S W2 01 13 03 185W 115V 60 HZ L e s s w a t e r M o r e w a t e r Figure 10 12 Water adjustment screw and contact alignment location
70. nd cleaned in last 12 months 1 Gap setting is 1 8 to 3 16 in Assembly good 2 3 Service and clean orifice See page 44 Set air gap See Section 2 page 7 79 to 85 kOhms NO Verify spark sense electrode air gap NO Check spark sense assembly See Figure 3 12 page 31 YES NO Replace assembly Check gas valve solenoid coil resistance Go to page 31 The no FL fault is recorded in both the AUTO and MANUAL LP mode Once the 30 second trial for ignition has timed out the fault is set and recorded in non volatile memory approximately 25 seconds later IMPORTANT YES YES NO YES IMPORTANT Make sure LP gas is available and that gas pressure is 10 5 to 11 5 in w c Section 3 31 MIN MAX RANGE HOLD H Hz REL mA A mV V V OFF A COM V mA A 1000V MAX 400mA MAX FUSED 10A MAX FUSED PEAK MIN MAX A CAT II 4 1 2 DIGITS 1 Seconds TRUE RMS MULTIMETER V MIN MAX RANGE HOLD H Hz REL mA A mV V V OFF A COM V mA A 1000V MAX 400mA MAX FUSED 10A MAX FUSED PEAK MIN MAX A CAT II 4 1 2 DIGITS 1 Seconds TRUE RMS MULTIMETER V P1 Connector P2 Connector From page 30 6 Voltage present during trial for ignition Check voltage output to solenoid coil See Figure 3 14 5 Check continuity of solenoid coil wires See Figure 3 13 Continuity Repair
71. ners that contain liquids have to be sealed prior to placing in freezer Not cycling AC power available 1 Mold heater failed open 2 Stepper motor failure 3 Mold thermostat faulty 4 Thermal fuse open 1 Replace ice maker 2 Replace ice maker 3 Replace ice maker 4 Replace wire harness Water spilling over ice maker mold 1 Ice jam with cycle in fill position 2 Leaky water valve 3 Mold thermostat failure 4 Stepper motor failure 1 Clear jammed ice cubes 2 Replace water valve 3 Replace ice maker 4 Replace ice maker Ice maker trips GFI 1 Excessive frost buildup behind ice maker 2 Connection at water valve wrong 3 Harness contacts wet and corroded 4 Mold heater shorted to ground 1 Defrost freezer remove and dry ice maker connection and module 2 Correct connection at water valve solenoid coil 3 Remove ice maker to clean and dry contacts 4 Check mold heater for short Ice Maker Troubleshooting Chart Section 10 87 Tools 2 Phillips screwdriver 5 16 nut driver 2 Flat blade screwdriver To remove the ice maker 1 Turn off the refrigerator 2 Unplug the ice maker AC power cord at the RV outlet 3 Remove the ice bin and the freezer shelf 4 Remove two retaining screws holding the ice maker to the mounting plate 5 Remove two freezer evaporator plate screws along with the washers then remove the mounting plate
72. ness 3 Rotate the ice maker so the module cover faces toward the freezer door then remove the cover 4 Roll the ice maker so the shut off arm side is down with the module facing away from the freezer D O N O T V L T H M N DISCONNECT POWER TO REMOVE MODULE UR 185W 115V 60 HZ IM S 106 626649 11 MAY 00 WB1 MIN MAX RANGE HOLD H Hz REL mA A mV V V OFF A COM V mA mA 1000V MAX 400mA MAX FUSED 10A MAX FUSED PEAK MIN MAX mA CAT II 4 1 2 DIGITS 1 Seconds 87 TRUE RMS MULTIMETER III Figure 10 14 Measuring solenoid coil resistance through wire harness Figure 10 13 Measuring solenoid coil resistance MIN MAX RANGE HOLD H Hz REL mA A mV V V OFF A COM V mA mA 1000V MAX 400mA MAX FUSED 10A MAX FUSED PEAK MIN MAX mA CAT II 4 1 2 DIGITS 1 Seconds 87 TRUE RMS MULTIMETER III 5 Set the multimeter to ohmmeter function then insert one probe into point V and the other into point N The multimeter test probe tips must be at least 1 2 inch long to contact the test points NOTE Section 10 85 The multimeter test probe tips must be at least 1 2 inch long to contact the test points Checking Voltage to the Stepper Motor Connection AC voltage at the stepper motor connection can be checked through test points N and M 1 Remove the ice bin and freezer
73. nstallation 0 cotes haut bas arriere Installer uniquement avec latrousse n_3 Voir les instructions d installation 618860 30916 2400 BTUH C R E T I F I E D CERTIFIED R R REFRIGERATORS ANZI Z221 19 2003 REFRIGERATORS CSA 1 10 2003 D E S I G N Figure 1 2 Location of cooling system serial number label location Made in USA SN XXXXXXX NORCOLD R 801201 Section 1 5 CAUTION The CAUTION symbol and text identify hazards or conditions which if ignored while performing a task can cause injury and or property damage Safety Awareness It is not possible to anticipate all of the conceivable ways or conditions under which the refrigerator may be serviced or to provide warnings and cautions as to all of the possible hazards that may be present Standard safety precautions and equipment should be used when working on electrical circuits and handling toxic or flammable materials Safety goggles and other required protection should be used during any process that can cause material to become airborne such as removing a leaking cooling unit or cleaning components Safety Symbols and Information The following safety symbols and information text are used throughout this service manual WARNING The WARNING symbol and text identify hazards or conditions which if ignored while performing a task can cause serious injury death and or extensive property damage
74. nt or obstructed ventilation Insufficient or obstructed ventilation reduces cooling efficiency because the heat load generated and dissipated by the system is not efficiently removed To maintain cooling efficiency cooling air has to flow freely over the external walls of the absorber coils and over the condenser fins When ventilation is suspected of being the cause of poor cooling make sure that Air intake vent and exhaust vent are clear Vents have are not covered with insect screen plastic sheeting leaves or a birds nest Loose insulation is not blocking air flow over the condenser or absorber or the flue opening Both fans are working DC voltage is 10 5 VDC or higher Low AC voltage Two 225 Watt AC heaters generate the heat load required to turn liquid ammonia into vapor To accomplish this task voltage has to be maintained between 108 and 132 volts AC heater failure One AC heater failure causes the system to operate at half the heat input required The heat output of one heater is insufficient to generate the ammonia vapor required Low propane pressure Propane pressure of 10 5 to 11 5 in w c is needed to generate the required heat output required for proper gas mode operation Dirty burner A dirty burner affects the heat output Under normal conditions the burner and flue need to be checked and cleaned annually R 707 refrigerant contains anhydrous ammonia wate
75. nual mode or in LP manual mode Before attempting to test the cooling unit make sure The refrigerator is leveled DC voltage input to power board is 10 5 to 15 4 volts AC voltage input to power board is 108 to 132 volts Both AC heaters draw amperage Gas pressure is 10 5 to 11 5 in w c The burner and the orifice are clean Flame appearance normal The flue is clean The flue baffle installed Ventilation is correct Intake vent is clear Exhaust vent is clear Both fans are operational Door gaskets are in good condition Doors are properly aligned Thermistor on the proper fin High temperature limit switch open No cooling fault code stored in Diagnostics screen 5 See Figure 8 2 page 63 Cooling Unit Testing The cooling System Diagnostic Flowchart on page 66 through page 67 provides sequential steps to troubleshoot the cooling system Before attempting to replace the cooling system 1 Make sure the conditions listed in Cooling System Replacement section are met 2 Power on the refrigerator 3 Set MODE to the AC manual mode or the LP manual mode 4 Set TEMP SET to setting 9 coldest 5 Place digital thermometer probe or thermometer immersed in a container of water on the left freezer shelf against the evaporator plate 6 Power off the ice maker units with ice makers
76. of any of the three available operation modes AUTO AC or LP Pressing the button momentarily allows verification the active mode Holding the button changes the mode The TEMP SET button allows selection of any of the nine temperature settings 1 cold and 9 coldest Pressing the button momentarily verifying the active setting Holding the button changes the setting Optical control display troubleshooting instructions may be found on Section 3 of this manual Optical control display assembly side Decorative box assembly side Screw 4 Striker Plate Figure 7 6 Optical control display assembly overlay and hardware Figure 7 7 Striker plate screws location Hinge cover Retaining screw Retaining screw Retaining screw Figure 7 8 Hinge cover right side shown 1 Unlock tab by pulling edge out slightly as indicated by arrow 2 Remove by pulling hinge cover out as indicated by arrow Optical control display assembly replacement Tools 2 Phillips tip screwdriver To replace the optical control assembly see Figure 7 6 Figure 7 7 Figure 7 8 Figure 7 9 page 58 and proceed as follows 1 Turn off the refrigerator 2 Remove the striker plate 3 Remove the right side hinge cover 4 Remove the three screws that hold the optical control assembly on the divider 5 Disconnect the wire harness at the circuit board 6 Connect the wire harness to the new circuit board 7
77. omponents Light bulb Light fixture Light cover Thermistor clip Thermistor Light power connectors Wire harness plug 48 Section 6 12 Volt DC Fans Two 12 volt DC fans illustrated in Figure 6 5 installed on the cooling system foam plug boost ventilation Fans are unidirectional and each fan draws 0 400 amps 12 volt DC Fan resistance through the fan motor circuit is approximately 1 8 ohms The fans are controlled by a thermostatic switch See Thermostatic Switch Figure 6 5 Fans and hardware Divider Heater The divider heater is permanently foamed between the freezer and fresh food compartment divider Powering on the refrigerator automatically powers on the divider heater Power to the heater is continuously supplied by the power board Figure 6 6 Thermostatic switch for fans Thermostatic switch The thermostatic switch is illustrated in Figure 6 6 Incoming 12 volt DC is fed through upper terminal The switch turns the fans on and off The fans come on when first condenser fin temperature is approximately 130 degrees Fahrenheit 54 4 degrees Celsius and turn off at approximately 115 degrees Fahrenheit 46 degrees Celsius Retaining screws Fan Fan Bracket Bracket Spacer 2 per fan Screw 8 32 x 1 2 per bracket Condenser fin Screw 8 32 x 3 8 2 12 VDC in 12 VDC out In roof vented installations it may be necessary to remove the refrigerator
78. on to assist technicians in the inspection and correction of installations not conforming to installation requirements and guidelines Section 5 LP Gas System This section covers LP gas system pressure requirements the effects of low or high LP gas pressure gas valve information and specifications gas valve serviceability gas valve replacement procedures gas valve solenoid coil resistance check burner tube information burner and orifice assembly information burner and orifice cleaning procedure Section 6 Electrical Components This section covers DC power requirement polarity of connections power board DC fuse light assembly light bulb replacement thermistor wire assembly thermistor assembly replacement divider heater fans fans thermostatic switch fan replacement procedure flapper assembly flapper assembly replacement spring pin replacements AC power requirements AC power cords AC fuse and AC heaters About this MAnuAl 2 Section 1 Section 7 Electronic Controls This section covers the power board optical control display assembly and replacement of boards Section 8 Cooling System This section covers cooling system refrigerant leveled operation requirement poor cooling issues cooling issues related to cooling system performance voltage and component effects on cooling performance LP gas pressure and components issues related to cooling performance electrical operated components failure related to cooling
79. otter amp Brumfield T77V1D10 09 30VDC RES 30VDC RES 700514 D4 R37 R34 4 6 5 D 12 D 11 Z3 C 1 Potter amp Brumfield T77V1D10 09 CHINA 10A 120VAC 30VDC RES 700514 JW4 JW6 D2 R9 R7 R24 R46 R4 R5 R23 R20 R18 R21 R21 JW7 JW9 JW10 JW8 R36 R41 R45 JW2 R441 R8 R10 JW3 R6 R40 R43 R42 R2 R38 R47 R30 R48 R35 R33 U1 LP1 Q1 Q2 Q6 C9 D10 R11 R12 C7 R16 R15 R17 R19 R13 R22 R32 R31 Z2 D7 R14 U4 C3 C5 U3 U6 JW11 Z4 Figure 7 4 Power board External connections Figure 7 5 Power board Internal connections Ground To gas valve solenoid coil To gas valve solenoid coil P1 Connector P2 Connector AC Heaters Black leads AC Heaters Yellow leads High temp limit switch leads Base 8 32 x 1 Hex head screw Cover 8 32 x 1 Hex head screw 12 VDC in Section 7 57 ON OFF MODE TEMP SET 1 COLD 9 COLDEST on Striker Plate Optical Control Display Assembly Figure 7 6 illustrates the front overlay view of the optical control assembly The overlay has an ON OFF button a MODE select button and a TEMP SET button The ON OFF button allows for powering on and powering off the controls Powering off requires pressing and holding the button for approximately two seconds The MODE button allows for selection
80. out gas operation and display the no flame fault code no FL Propane gas pressure above 11 5 w c tends to lift the flame from the burneror blow out the flame which will cause the controls to shut off the gas valve lockout gas operation and display the no flame fault code no FL High LP gas pressure can cause incomplete propane gas combustion which may be indicated by a popping sound at the burner Pressure Requirements Gas pressure above 11 5 w c Checking propane gas pressure Use a U shaped manometer or comparable tool to check propane gas pressure When checking propane gas pressure at least 50 percent of the RV btu load need to be on This ensures that the LP gas regulator is capable of delivering and maintaining gas pressure throughout the system including the refrigerator 40 Section 5 Figure 5 1 121X model LP gas system components The combination gas valve is illustrated in Figure 5 1 Specifications Solenoid coil amp draw 0 146 A 12 VDC Resistance 81 OHMS Maximum pressure 1 2 PSI Operation In AUTO LP gas mode or LP gas mode operation the controls energize the solenoid coil to open the gas valve Spring pressure closes the valve when the electronic controls de energize the solenoid coil Gas Valve LP18 orifice assembly Gas valve 7 slot burner Burner tube Manual shutoff valve Pressure test
81. performance dirty flue effects on flame performance flue cap blocked or jammed over flue opening exceeding maximum level limits effect on cooling system performance inadequate repairs and unauthorized modifications cooling system monitoring system high temperature monitoring system cooling system replacement cooling system testing diagnostic flow chart and cooling unit replacement procedure Section 9 Diagnostics This section covers accessing and navigating through the built in diagnostics screens identification and segments description Section 10 Ice Maker This section covers ice maker specifications operational description troubleshooting chart replacement procedure ice maker cycle testing water valve operation water valve replacement water fill line heater water fill line thermostatic switch information and ice maker module troubleshooting procedures Section 11 Water Dispenser This section covers water dispenser operation water valve replacement reservoir replacement dispenser switch replacement and LED circuit board replacement Section 12 Wiring Schematics and Pictorials This section provides wiring schematics and pictorials for models 121X XX series refrigerator Section 1 3 Refrigerator Identification The 121X XX series gas absorption refrigerator cools on 120 volt AC power or propane gas The 1210 AC series cools only on AC power These refrigerators electronic controls operate on 12 volt DC
82. place power board AC rE Code AC Relay Stuck Closed 22 Section 3 dc LO Fault Code DC Voltage Low MODE ON OFF SET TEMP on 1 COLD 9 COLDEST 1 COLD 9 COLDEST Begin DC voltage less than 10 5 volts 1 Battery output 10 5 to 15 4 volts 2 1 Check diagnostic fault history Screen 4 for low DC recorded history 2 Clear history using diagnostic Screen 6 3 Recheck diagnostic Screen 4 for low DC recorded history Correct RV DC output to refrigerator NO Check RV DC power output to refrigerator YES 1 Connect a charged 12 volt bat tery If the fault code does not display check the DC circuit feeding power to the refrigerator 2 If the fault code displays with the charged battery connected replace the power board YES NO The dc LO fault is recorded in all operating modes any time DC voltage input falls below 10 5 volts DC The dc LO code displays and is recorded in non volatile memory approximately 25 seconds after the fault occurs IMPORTANT Section 3 23 dc HI Fault Code DC Voltage Low MODE ON OFF SET TEMP on 1 COLD 9 COLDEST 1 COLD 9 COLDEST Begin DC voltage more than 15 4 volts 1 Output 10 5 to 15 4 volts 2 1 Check diagnostic fault history Screen 4 for low DC recorded history 2 Clear history using diagnostic Screen 6 3 Recheck diagnostic Screen 4 for high DC recorded history NO Check RV DC power output to
83. port Gas valve LP gas in LP gas out Manual shutoff valve ON OFF positions Figure 5 2 Gas valve Section 5 41 Gas Valve Replacement Procedure To replace the gas valve 1 Turn off the refrigerator 2 Disconnect DC power at the power board 3 Unplug AC cord at the RV outlet 4 Shut off the gas valve s at the LP gas container s 5 Disconnect the 12 volt DC power supply wires at the gas valve solenoid coil 6 Disconnect the LP gas supply line 7 Disconnect the burner tube 8 Remove two 8 32 x 3 8 Phillips screws holding the existing gas valve to the bracket then remove the valve See Figure 5 3 page 42 9 Install the new gas valve on the bracket and fasten it to the bracket using the two 8 32 x 3 8 Phillips screws removed in step 8 10 Reverse steps 7 through 5 to connect the LP gas supply line and the burner tube to the new valve WARNING Always use two wrenches to loosen or tighten fittings to prevent damaging components piping or fittings Damaged components piping or fittings create the potential for gas leaks 11 Open the gas valve s at the LP gas container s 12 Leak test the LP gas supply line fitting 13 Plug the AC cord into the RV outlet 14 Connect 12 VDC power to the power board 15 Turn on the refrigerator then set the MODE to LP gas operation 16 Leak test the gas valve burner tube connection fitting the burner tube orifice connection a
84. power board 5 A tan color automotive blade style DC amperage draw nominal 12 VDC Automatic ignition 0 50 A Divider heater 0 70 A Flapper heater 0 42 A Lamp fresh food compartment 0 46 A Gas valve 0 146 A Fans 2 0 400 A per fan Valve water dispenser 10 W 12 VDC Heater water dispenser models water line 0 44 A Heater ice maker only water line 1 3 A Heater modular ice maker and water dispenser 0 23 A AC components AC heaters 2 Wattage per heater 225 W 120 VAC H
85. power cord Figure 7 10 Power board external connections Cover 8 32 x 1 Hex head screw Figure 7 11 Cover retaining screws location Spark sense electrode Assembly 60 Section 7 To remove the power board from base 1 Press the left tab in to free the left side 2 Press the right tab in to free the right side 3 Lift power board up to remove from base To install power board on base 1 Insert bottom edge into the base bottom tabs 2 Press evenly on upper edge to lock power board in the base Figure 7 13 Power board removal installation P2 Connector P1 Connector High temp limit switch leads AC Heaters Black leads AC Heaters Yellow leads Figure 7 12 Power board internal connections Section 8 61 section 8 cooling systeM Leveled Operation Cooling system efficiency is not affected when the vehicle is in motion When parked off level operation should not exceed three 3 degrees from side to side and or six 6 degrees front to back at the refrigerator Poor cooling Poor cooling may be the result of one or a combination of the following Insufficient or obstructed ventilation Low AC voltage AC heater failure Low propane pressure Dirty burner Fan failure Dirty flue Blocked or jammed heat deflector cap Operation over maximum off level limits Inadequate repairs Unauthorized modifications Insufficie
86. pproximately seven seconds shortly after the ice cubes are ejected Approximately 4 7 fluid ounces of water refill the mold during the seven second period This procedure applies only to water valve part number 618253 The modular ice maker and water dispenser replacement procedure appears in Section 11 WARNING Unplug the refrigerator AC power cord from the RV receptacle when working on the water valve Failure to unplug the AC power cord may expose the technician and or other personnel to an electrical shock hazard Water Valve Replacement To remove the water valve proceed as follows and refer to Figure 10 6 and Figure 10 7 page 81 Solenoid coil RV water connection Water to ice maker Bracket Figure 10 6 Water valve and water connections 4 Disconnect thermostatic switch and the water fill line heater 5 Disconnect the BROWN wire from the heater WHITE wire and unwrap the heater wire from the valve body 6 Disconnect remaining switch BROWN wire from the 12 volt DC in RED wire 7 White heater wire from the 12 volt DC in BLACK wire 8 Disconnect the RV water supply line at the water valve 9 Disconnect the ice maker water fill line at the water valve 10 Detach the water valve assembly bracket from the back plate by removing the two screws along with their spacers Retain screws and spacers to install replacement valve 11 Reverse steps 10 through 1 and see Figure
87. r and hydrogen The refrigerant also contains sodium chromate a corrosion inhibitor The cooling system is a sealed gas absorption refrigeration system charged with R 707 refrigerant Optimal cooling system efficiency requires controlled heat application sufficient air flow to remove heat and for combustion air and leveled operation NOTE 62 Section 8 NORCOLD Serial Number 700000 Made in USA Fan failure The fans enhance ventilation when ambient temperature is 90 degrees Fahrenheit 32 2 degrees Celsius or higher A failed fan will result in insufficient heat removal Dirty flue A dirty flue restricts the flame from drawing the right amount of secondary combustion air Little or no secondary combustion air will cause a weak or lazy flame A partial view of the flue and spiral baffle is illustrated in Figure 8 1 Blocked or jammed flue cap A flue cap that is blocked with insulation and or jammed against the flue opening restricts the flow of exhaust gases from the burner box The flue cap location is illustrated in Figure 8 1 Operation over maximum leveled limits The refrigeration cycle works on gravity flow Exceeding off level limits during operation affects the flow of refrigerant through the system Inadequate repairs Inadequate repairs that may result in poor cooling include Failure to properly seal the cooling system to the cabinet Failure to seal the drip tube penetratio
88. r stationary support Hinge fits over stationary support Figure 6 9 Flapper assembly hinges and wiring connector Flapper replacement Tools 2 Phillips screwdriver To remove the flapper assembly Refer to Figure 6 9 for location of components 1 Power off refrigerator 2 Open the left fresh food compartment door 3 Remove the bottom and top flapper hinge screws 4 Lift the flapper assembly until the hinges are clear of the stationary supports 5 Disconnect the wiring connector at the at the flapper heater To install the replacement flapper assembly reverse steps 4 through 1 and refer to Figure 6 9 After completing installation close door and open the door several times to assure the flapper assembly rotates freely in and out of the guide blocks 52 Section 6 Pull to remove Push until the end of casing is flush with flange opening Figure 6 10 Spring pins and cabinet contacts Figure 6 11 Removable door seal heater spring pin removal and installation A jammed bent or broken spring pin has to be replaced to maintain the flapper assembly heater working To replace spring pin see Figure 6 11 and proceed as follows 1 Open the left fresh food compartment door 2 Pull out the existing spring pin from the flange 3 Push and seat the replacement spring pin into the contact flange 4 Check spring pin operation a Push the pin all the way until seated then rel
89. refrigerator on the floor doors side down 5 Disconnect and remove the water valve assembly See Section 10 for information on the ice maker water valve and the ice maker water dispenser water valve WARNING Always use two wrenches to loosen or tighten fittings to prevent damaging components piping or fittings Damaged components piping or fittings create the potential for gas leaks 6 Disconnect and remove the gas valve assembly with bracket See Section 5 for information on gas valve connections and fittings 7 Disconnect and remove the spark sense electrode assembly 8 Remove the power board cover then disconnect the AC heaters leads and the high temperature limit switch leads 9 Disconnect and remove fans 10 Disconnect fan wiring from thermostatic switch and remove switch Section 8 69 For steps 11 through 15 refer to Figure 8 5 on page 70 11 Remove wire ties that hold wire protector to cooling unit plug 12 Remove permagum sealer from drain hose opening Save for reinstallation 13 Cut the tape along the four edges of the cooling unit back wrapper 14 Remove condenser bracket screws 2 15 Remove absorber bracket screws 2 16 Lift absorber coil just enough to move wiring and ice maker water line if present out to the side of the cabinet Use only NORCOLD approved Thermal Mastic sealant part number 61450740 Do not use silicon latex or petroleum base sealan
90. reignite Dirty burner Spark sense electrode gap not 1 8 to 3 16 in Page 44 Page 7 Spark sense electrode wire has no continuity Page 31 L1 oP fault High temperature limit switch open Off level operation Insufficient obstructed or downdraft ventilation Heat deflector cap blocking flue opening Cooling system Page 33 Page 7 Page 62 Page 61 Poor cooling on AUTO LP or manual LP mode Dirty burner Gas pressure less than 10 5 In w c Flue clogged or dirty Heat deflector cap blocking flue exhaust Flue baffle missing Page 39 Page 44 Page 62 Page 62 Page 62 Insufficient ventilation Page 33 Poor cooling on AUTO AC manual AC AUTO LP or manual LP modes Insufficient ventilation Cooling system Fan s disconnected malfunction Fan thermostatic switch disconnected Page 33 Page 48 Page 49 Page 61 One AC heater failed open Page 61 10 Section 3 Fault Code Probable Cause Reference 12 volt DC not connected to power board Power board F1 fuse open blown Optical display controls overlay malfunction Thermistor disconnected open Thermistor wiring terminals corroded broken AC heaters not connected to power board AC relay stuck closed More than 15 4 volts DC input to power board Fresh food compartment door open or ajar for more than two 2 minutes Page 13 Page 12 Page 19 Page 20 Page 21 Page 22 Page 23 Page 24 Less than 1
91. rew 15 to 20 inch pound 8 Install the absorber coil brackets screws Tighten each screw 15 to 20 inch pound 9 Tape the four edges of the foam plug wrapper to the cabinet with two inch wide adhesive backed HVAC aluminum tape or poly mask sealing tape 10 Make sure heat deflector cap is firmly on the flue tube 11 Install and rewire the fans thermostatic switch 12 Install and rewire fans 13 Connect the AC heaters wires to the power board 14 Connect the high temperature limit switch to the power board 15 Install power board cover 16 Install spark sense electrode assembly WARNING Do not attempt to upright the refrigerator without the assistance of an able person Up righting without additional help may cause personal injury and or extensive property damage 23 Upright the refrigerator 24 Install the freezers evaporator plate screws along with flat washers Tighten each screw 30 to 55 in pound 25 Install the fin assembly screws Tighten each screw 30 to 55 inch pounds 26 Attach the thermistor to the second fin counting from the right After installing the refrigerator in the enclosure and connecting RV propane supply line to the gas valve 1 Connect 12 volt DC to the power board 2 Plug the AC power cords to the RV outlets 3 Open the LP gas container gas valve 4 Leak check the gas valve connection No leaks allowed 5 Power on refrigerator then select LP manua
92. stance Values Blinking Section 3 19 1 Disconnect the thermistor from the circuit and fin assembly See Figure 3 9 2 Connect a resistance meter as shown 3 Record reading with thermistor at ambient temperature 4 Put the thermistor in small container filled with crushed ice See Figure 3 10 5 Compare thermistor resistance changes to temperature values shown in Table Thermistor Temperature to Resistance Values Checking thermistor resistance in ice bath MIN MAX RANGE HOLD H Hz REL mA A mV V V OFF A COM V mA A 1000V MAX 400mA MAX FUSED 10A MAX FUSED PEAK MIN MAX A CAT II 4 1 2 DIGITS 1 Seconds 87 TRUE RMS MULTIMETER III Temperature Resistance C F kohms 29 85 8 1 9 0 27 80 9 1 10 0 24 75 10 1 11 0 21 70 11 1 12 0 16 60 12 1 13 0 10 50 15 5 16 5 4 40 22 5 23 5 2 35 24 5 25 5 0 5 33 28 5 29 5 0 0 32 30 0 32 0 Table Thermistor Temperature Resistance Values Container with crushed ice Thermistor Connector Thermistor Light connections Location on the second fin from right side of fin assembly Figure 3 9 Thermistor light wires assembly Meter set to kohm scale WIres color THERMISTOR Red White stripe Red LIGHT Black White stripe White Black stripe Figure 3 10 Checking thermistor resistance 20 Section 3 AC HE Code AC Heaters Failed Open MOD
93. t Silicone latex and petroleum sealants may damage the cabinet and or cooling system foam plug greatly reducing cooling efficiency CAUTION Applying Thermal Mastic Sealant Sealing the cooling unit to the cabinet requires all three tubes of Thermal Mastic sealant supplied with the replacement cooling unit Each tube tip must be cut wide to dispense a bead approximately no wider than 3 4 inch wide Apply the sealant as outlined in the following steps Failure to apply the sealant as outlined will result in poor cooling performance IMPORTANT 1 Apply a 3 4 inch wide x 1 2 inch thick bead of Thermal Mastic sealant to the evaporator section of the cooling system as shown in Figure 8 6 page 71 2 Apply 3 4 inch wide x 1 2 inch thick bead of Thermal Mastic sealant on the four sides of the cabinet opening See Figure 8 7 page 71 17 With the help of an able person lift the cooing unit out of the cabinet 18 Remove all thermal sealant from the cabinet steps and freezer plates 19 Remove all thermal sealant from the evaporator coils and plug WARNING Do not attempt to pull the cooling unit out of the enclosure without the assistance of an able person Attempting to pull the cooling unit without additional help may cause personal injury and or extensive property damage 70 Section 8 Figure 8 5 Cooling unit component location Lower Section Screw condenser bracket Screw condenser brac
94. t the orifice assembly Serviceability The gas valve has no replaceable parts The 12 volt DC solenoid coil terminals should be maintained clean and tight The valve s body and solenoid coil should be maintained clean and dry For steps 6 through 12 refer to Figure 5 3 page 42 NOTE Tools 2 Stubby Phillips screwdriver 9 16 Open end wrench 5 8 Open end wrench Leak test solution WARNING Do not wet or spray leak test solution on or near electrical connections or electronic components All water leak test solution conducts electricity and may create electric shock hazard shorts and or damage circuits WARNING Do not use leak test solutions that contain ammonia or chlorine Ammonia and chlorine corrode brass and cooper components 42 Section 5 Burner tube 8 32 X 1 2 Phillips screws 2 LP gas supply line connection fitting RV LP Gas supply line Solenoid coil 12 VDC power connections Bracket W hi t e W hi t e ON OFF ON ON ON Burner tube connection fitting Torque 75 to 95 in lbs Figure 5 3 Gas valve replacement Section 5 43 Measuring Solenoid Coil Resistance Tools Multimeter To measure solenoid coil resistance 1 Turn off the refrigerator 2 Disconnect wires at the solenoid coil connections 3 Set multimeter to the Ohm function 4 Connect multimeter probes to the solenoid coil terminals as illustrated in Figure
95. urner in burner box 10 Check the orifice Replace if the condition of the orifice assembly is questionable To clean the orifice assembly dip the assembly in denature alcohol and air dry 11 Clean the burner The slots may be cleaned with a scouring pad or wire brush 12 Insert the burner into the burner box then install the 8 32 x 3 8 Phillips retaining screw See Figure 5 7 13 Install the orifice assembly onto the burner Thread the orifice assembly into the burner by hand then finish tightening using two wrenches Burner box cover 46 Section 6 section 6 electricAl power reQuireMents And coMponents DC Power Requirement Refrigerator controls require 12 volt DC to function The minimum voltage input to the power board is 10 5 volts the maximum is 15 4 volts 12GND GND 100 B ANSI Z21 2 JW5 P3 RT424F12 12V 05 43 07 3 D5 R50 R49 07 3 07 3 07 3 4 C Q3 4 C D8 CPC E 94 V 0 P4 GND 12VDC Potter amp Brumfield T7CS1D2 05 5VDC 0544 700514 5A 120VAC CHINA D3 c 4 D6 3 07 R28 R 3 D13 07 3 R39 D1 N M 07 3 1237 0301 9 8 4 5 3 K3 R25 R27 R26 R29 C8 7 4 R 1 2 Potter amp Brumfield T77V1D10 09 CHINA CHINA 10A 120VAC 700514 10A 120VAC Potter amp Brumfield T77V1D10 09 30VDC RES 30VDC RES 700514 D4 R37 R34

Norcold 1210 Series Service manual

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