HxxxFD(N/P)
Contents
1. COM Connexions de R L gt SPA thermostat t l command Right Junction Box Boite de jonction de droite 1303103801 rev F Page 612. HAYWARD Page 11 Fuses Fuse board configuration through Oct 2010 The fuses are 250v SLO BLO 5 x 15 mm HAYWARD POOL PRODUCTS P N 1123043701 TRANSFORMER PRIMARY LOW VOTRE gg The FC4 fuse 2 5 FC1 and FC2 fuses amp protects the 3 amp protect the transformer primary input voltage T a 120VAC These fuses blow Tani rs Al irri secondary output due to a shorted ele es gt f i e m E voltage froma e arii shorted failed Blower i ranstormer Igniter or ICB improper or excessive voltage Poe gt a The FC3 fuse 1 5 amp protects the transformer 24VAC secondary output voltage Situations that will cause this fuse to blow include Short between FC3 to R amp C on the ICB e Any short to ground at the E1 connector external remote terminal on the ICB or 24 VAC circuit 3 V HAYWARD Page 12 Remaining 3 fuses are now all Samp Different fuse kits will reflect the change Fuses Fuse board configuration Nov 2010 forward M TRANSFORMER PRIMARY E 7 no WA A G4Y U HAYWARD POOL PRODUCTS P N 1101701401 REV A ay A sovesve s2 me The fuses are 250v SLO BLO 5 x 20 mm Hayward Part FDXLFSKF30 Qty 10 HALL 1A 5010 1 FIELD WIR NG PANEL 31 066137 1 Rf ICB F1 fuse Beginning Nov 2010 the F3 fuse has been removed from the Fuse Circuit Board Since the F1 Fuse automotive style fuse on the ICB protects the same circuit it
3. Page 1 UHS Sequence Of Operation The control continually compares the Set Temp to the actual water temp When the water temp is 1 below the set point the sequence starts The control checks for open Blower Vacuum Switch Blower starts pre purge cycle as the igniter heats up 20 Sec The Control checks for a closed Blower Vacuum Switch At proper Igniter temp a 4 second trial begins Gas valve opens and monitors flame sense The blower will turn off for one second The Igniter is de energized at flame sense or at completion of 4 sec trial If the flame is sensed The Blower Vacuum Switch Control Loop Temp sensor amp Flame Sensor are constantly monitored during call for heat When set temp is reached the control ends the call for heat The gas valve is de energized and the flame is extinguished The blower will operate for a 30 second post purge HAYWARD Page 2 UHS Sequence Of Operation Failure to Light Retry Sequence Gas Valve de energizes 30 second blower post purge Starts over at 2 of heating mode sequence Retries 3 times until lockout IF Code Waits 60 minutes then retries 3 more times Will continue to retry every 60 minutes until demand for heat is stopped Note When making keypad entries of any type there may be a 5 10 sec delay for certain situations SaaS HAYWARD Page 3 UHS Electrical and Gas Connections Gas Supply Bonding Lug Beginning
4. H AVIAJA Pry Universal H Series AY WAR LE Ass En D IAE Bi Diagnostics Manual HxxxFD N I 2 oF Important Safety Instructions Sequence of Operation Electric and Gas Connections Control Hookup Gas Pressure Testing Control Board Connections Fuse Board Connections Fuses Heater will not power up Open FC1 and or FC2 Fuse Open FCs and or F1 Fuse Open FC4 Fuse Diagnostic Codes BD Code Table of Contents Page 1 EE and CE Codes Pages 2 3 IO and SB Codes Pages 4 5 SF and HS Codes Pages 6 7 HS and PF Codes Pages 8 9 HF Code Page 10 LO Code Page 11 IF Code Page 12 13 AC Code Pages 14 22 AO Code Pages 23 24 Temperature Lock Out Pages 25 28 Heat Exchanger Pages 29 31 Flow Charts Page 32 Wiring Schematic Pages 33 34 Wiring Diagram eS ae HAYWARD Page 35 Page 36 Page 3 Page 38 Page 39 Pages 40 43 Pages 44 46 Page 47 Page 48 50 Page 51 Page 52 53 Pages 54 59 Page 60 Page 61 D Waring y High Voltage Electrocution Hazard Read and follow all instructions in the service and installation manual and on the equipment Failure to follow instructions can cause severe injury and or death Hazardous voltage can shock burn cause serious injury and or death To reduce the risk of electrocution and or electric shock hazards e Only qualified technicians should attempt repairs e Replace damaged wiring immediately e Insure Heater is properly grounded and bonded SSS HAYWARD
5. If Step 11 voltage is present and display is blank proceed to Step 12 If voltage is not present replace the ICB q En ry Nae a ALY 2 HAYWARD Page 21 Troubleshooting Heater will not power up Step 12 Ensure display board is not wet and no debris is present Take ohm reading of keypad The membrane switch has a 4 pin connector on the end of the ribbon cable Measure using holes in top of connector To test the MODE button measure resistance across pins 1 and 4 To test the UP button measure resistance across pins 2 and 4 To test the DOWN button measure resistance across pins 3 and 4 With the button not pressed you should measure an open circuit resistance greater than 100 Mohms When pressed resistance should be less than 100 ohms If readings are not correct replace the keypad Otherwise replace the display board OHAYWARD _ Troubleshooting Open FC1 and or FC2 Fuse Step 1 Verify that 120 VAC Voltage Selector Plug is NOT installed with a 240 VAC field power supply If correct plug is installed proceed to Step 2 If incorrect turn the power off and install the 240 VAC plug Then replace FC1 and FC2 Fuses HAYWARD Page 23 Troubleshooting Open FC1 and or FC2 Fuse Note Make sure to disconnect power prior to performing the steps below Remove P4 and P3 plugs Measure Check for faulty Transformer Transformer for resistance of Step 2 wiring an
6. Page 34 Service Light On EE and CE Codes Se Communication Error between ICB and display board Error may be CE Code cleared by cycling line power off and on Otherwise inspect Display Interface ribbon cable and ensure plug is securely attached to ICB If Display Interface ribbon cable and connector plug is OK replace the Display Interface Assembly and or Key Pad If code is still present replace the ICB Sa HAYWARD Page 35 Service Light On IO and SB Codes IO Code Igniter Open Inspect Igniter wiring ensure Igniter plug is securely attached to the ICB Verify Igniter ohm resistance 8 25 ohms between 20 140 F Fo g MADE IN ito a If wiring damaged and or ohms resistance is out of range replace the Igniter Stuck Button Indicates the display board is receiving a continuous SB Code closed circuit on one of the buttons for more than 30 seconds Refer to Step 13 on Page 22 HAYWARD Page 36 Service Light On SF and HS Codes Step 1 SF Code Sensor Failure Inspect Temperature Sensor thermistor wire make Sure sensor is plugged into ICB securely Measure resistance between black wire and each red wire the Temperature Step 2 Sensor resistance should be the same 10k ohms at 77 F If readings are significantly different from each other replace the temperature sensor Otherwise replace the ICB High Temperature Sense If wat
7. OK Plug installed within range at Blower Vacuum Page 48 Page 48 Page 50 relay Page 50 Switch No Replace Install correct Replace the Replace the damaged parts plug Blower ICB Is the Blower relay open Page 47 Replace the Blower Vacuum Switch Replace the ICB SSS HAYWARD Page 59 L LI1 S h t N L2 240v EE at plug eee 120v sf BK plug tw EL P1 2 P1 1 E Parta Y P2 T3 P2 T2 M pm FWP FWP LJ R FC2 Fuse FC1 Fuse circuit 1 circuit 3 P3 T3 P3 T1 P3 T4 120v P3 T2 120v Isolation 4 Transformer NN NN NN P4 C 24v gt P4 24v P4 120v m 120v rT P4 N i circuit 2 FC3 Fuse FC4 Fuse circuit 4 m P5 C FWP P5 R P6 H FWP T P6 N EB CO r n G E12 R E10 H H 7 Fee E10 N pat m D lt D lt 5 lt E3 L Igniter E3 R gt A B B Y A a DE al ee z 5 a F1 3 Amp Fuse O O zo A z E E6 R Blower E6 W ad boos E a i Note Went teens 1 The Igniter Blower and Gas Valve Control Board Temp Sensor ohms Q 2 between black and each red should read the same 77 F 10 000Q Bezel Ribbon Cable Continuity 1 amp 4 Mode Switch 2 amp 4 Temp Set Red up 3 amp 4 Temp Set Blue down relays are an integral part of the ICB Integrated Control Board Wiring internal to the ICB and temp sensor are indicated by a dotted line le Top Isolation transformer creates 4 circuits as shown
8. Page 40 Pressure Switch closed Page 42 Page 52 closed Page 43 No No Ko Adjust Water Pressure Switch if needed Is the flue blocked Replace the Refer to the pressure or restricted High Limit switch adjustment Switches section of the installation service manual LO Code Cleared Turn the Backwash or clean the filter circulation pump on Replace the Vent Pressure Switch Replace the Water Pressure Switch SSS x HAYWARD Page 57 code Flow Chart IF Code Gas supply shutoff Is inlet gas supply Is the Flame Sensor During 4 sec trial for valves and Gas pressure between plugged in and 5 in ignition is 22 28 VAC Valve turned on min and max length Page 45 present at Gas Valve and Page 8 110 125 VAC at Igniter Page 45 Replace the ICB Adjust the gas Plug in or replace pressure the Flame Sensor Page 8 Clean or replace m Inspect Orifices and Is the Manifold gas a dirty parts Burner Tubes pressure correct Clean Page 46 Page 8 Y Determine cause A Adjust Manifold gas and resolve Page 46 pressure Page 9 plate installed and not nie eee blower inlet plate damaged or blocked p Replace Flame Sensor a N HAYWARD Page 58 Flow Chart AO amp AC Code Is the Blower Is the correct Is the Blower Is 110 125 Replace the Vacuum tubing Voltage Selector resistance VAC present Blower and wiring
9. for troubleshooting PUN A Page 60 Fuse Circuit Board Carte de circuit a fusible BRBK Y O RGY GGW VOLTAGE SELECTOR EE O000 Keypad Pav num rique onnection Diagram V Water Temperature lens Display Circuit Board Limit Switch me be O AVC pau Commutateur limiteur OR L a T d affichage de temp rature d eau BK Oo BK Water Temperature Sensor Water Temperature Capteur de Gas Valve Limit Switch temp rature de l eau s ms Commutateur limiteur PEU RE de temp rature d eau Flame Sensor Capteur de flammes 240 VAC Plug ji Prise de 240 V c a peeo EE AEE ar w R Control Module _ 120 VAC Plug Module de commande Prise de 120 V c a BK w R Transformer Ww Transformateur 0 y 4 R 9 Q S amp ww BK black noir BL BK o 3 ap R BL blue bleu BR 6 GY ct an ignitor Combustion Blower g Rallumeur Soufflante de combustion o GY gray gris g g O orange orange Q gS R red rouge 1 V violet violet G Ww white blanc BK 5 cy Y yellow jaune L L L1 lt BK NOTE Power Connections 1 Heater is factory wired for 240VAC To convert to 120VAC install 120VAC plug into mating connector on fuse Connexions d alimentation Nie a is circuit board GND lt G 2 For field power connections use 14 AWG or larger wire rated for at least 75 C 167 F 3 For field remote thermostat connections use 22 AWG or larger wire 4 If any of the o
10. will be the only fuse going forward HAYWARD Page 13 Troubleshooting Verify incoming voltage to heater is present 110 125 or 220 245 VAC if Step 1 voltage is present proceed to Step 2 Otherwise correct incoming line power to heater Models After August 2008 HAYWARD Page 14 Troubleshooting Heater will not power up Step 2 Verify Voltage Selector Plug matches incoming line power Inspect Fuse Board wiring and ensure all plugs are securely fastened to board Step 3 a Page 15 Troubleshooting Verify that FC1 and FC2 Fuses are not open Check incoming voltage at bottom of both fuses Fig A and out going voltage at top of both fuses Fig B if no voltage is present at the top of both fuses remove fuses from the Fuse Holders and measure continuity across each Fuse Fig C BE IL SSS HAYWARD Page 16 Troubleshooting Heater will not power up Disconnect plug from P4 connector from Fuse Board Measure for 22 28 VAC between pins 1 amp 2 of plug from Transformer red wires and 110 125 VAC between pins 4 amp 6 grey wires Troubleshooting Heater will not power up For Fuse board Older than Nov 2010 Disconnect plug from P5 connector on Fuse Step 6 Board and measure for low voltage 22 28 VAC between R amp C pins of P5 receptacle on Fuse Board If voltage is not present proceed to Step 7 For boards from Nov 2010 forward replace the
11. 01 91 893 1 0908 B If OK proceed to Step 8 HAYWARD Page 42 Service Light On LO Code Applies Only To Indoor Installations Step 8 Ensure that flue is not blocked or restricted See indoor vent sizing requirements in Installation Manual Remove wires from Vent Pressure Switch and measure continuity between Step 9 terminals While heater is running measure continuity across the Vent Pressure Switch z gt E So oS oF lt x ze 1101669001 91893 1 0908 HAYWARD Page 43 Service Light On IF Code Step 1 IF Ignition Failure Ensure main gas shutoff outside the heater is open and that the Gas Valve inside the heater is in the ON position Step 3 Ensure Gas Static Load and Manifold pressures are correct See Page 8 If OK proceed to Step 5 Otherwise proceed to Step 4 Page 44 Service Light On IF Code Step 4 Measure for 22 28 VAC across Gas Valve during trial for ignition If 22 28 VAC is present and Gas Valve does not open with manometer connected to valve replace Gas Valve See Page 8 for reference If 22 28 VAC is not present replace the ICB For models manufactured prior to 4 14 2009 Step 5 Verify which flame sensor is installed If 3 flame sensor installed replace with 5 flame sensor ih HAYWARD Page 45 Service Light On MODEL ALTITUDE VENT TYPE H400FDN 0 410100 FT OUTDOOR INDOOR H400FDP 0 2000 FT
12. OUTDOOR Step 7 Remove and inspect Gas Orifices and Burners for blockage Spider webs HAYWARD Page 46 Service Light On AC Code AC Code Air Switch Closed Blower vacuum switch closed when expected open Disconnect wires and tubing from switch measure continuity between terminals on switch If continuity exist replace switch Service Light On AO Code Step 1 Check for faulty Blower and Blower Vacuum Switch Wiring Tubing Hose Barb on Blower and Connections iia 7 7 HAYWARD Page 48 Service Light On AO Code Note Resistance values are for heater that has not been running in the last 10 15 minutes For Models Manufactured Before September 2010 Disconnect the Blower Plug Step 3 from ICB and measure the Blower resistance Resistance should be 8 9 ohms from Black to Red wires and White to Blue wires S555 TE HAYWARD Page 49 Service Light On AO Code For Models Manufactured After September 2010 Disconnect Blower Plug from ICB Step 3 and measure resistance between the RED BLU wires together and the BLK WHT wires together This resistance should be 4 5 ohms Sten 4 Disconnect Blower Plug from ICB and generate a call for heat While in pre purge Pp measure for 110 125 VAC across Pins 1 amp 2 of Inducer on ICB 8 INDUCER owe If 110 125 VAC is not present replace the ICB If 110 125 VAC is present and Blower is running replace the Blower Vacuum
13. Page 9 or 6 8 7 0 w c for Propane HAYWARD Page 8 Gas Pressure Testing Turn clockwise to increase pressure If inlet pressures are correct and the Manifold Step 3 Pressure is low or high adjust the Manifold Pressure at the Gas Valve A Pression de gaz maximale a l admission Altitude see label on blower inlet plate Note Never adjust valve if incoming pressure is not correct Ny E ESAE VUAN Page 9 Integrated Control Board ICB Connections Display E7 Voltage te L gt Ya D AFART NN tall K D R amp C x ral E12 E13 SALUE Gas Valve and Safety Switches E11 ds 21 C19 ry lt T R71 Cig R4 ay Seay Remote Control p R47 wi IN oe AC CR CAS E1 aS amp Igniter Blower Inducer E3 E6 HAYWARD E EFAS SEFE EE Page 10 Fuse Circuit Board Connections Fuse board configuration up to Oct 2010 Transformer Low Voltage High Voltage P6 P5 Power Connection for junction boxes after Aug 08 LL O P1 4 a HAYWARD POOL PRODUCTS P N 11237437 p 4 TRA G N w LOW VOLTAR Primary P3 G Terminal block for Sa Transformer field wiring z E Secondary P4 connections TB1 es 3 ml ee before Aug 08 VOLTAGE SELECTOR Configure heater for 240 VAC or 120 VAC by installing correct plug P2 240 VAC plug factory installed
14. Sept 08 High Voltage Low Voltage Page 4 Electrical amp Control Connections Beginning Sept 08 120 VAC or 240 VAC Connection 120V M gt A Three Wire Remote Two Wire Remote Connection D Connection Orange Pool a Orange Pool and White 24V and White Common Red Spa 2 WIRE REMOTE 1303277301 3 WIRE REMOTE Page 5 Control Hookup Through August 08 Control hookup located outside control box Two Wire Hook up Three Wire Hook up Orange Pool and White 24v Orange Pool White 24v and Red Spa HAYWARD Page 6 Control Configuration Two wire Step 1 Press the Mode button to place the heater in Standby Mode _ Hold the Down Arrow and Mode buttons simultaneously for 3 seconds Step 2 for Bypass operation bo will be displayed on the screen _ Heater must then be in Spa or Pool Mode for operation The heater will Step 3 fire when instructed by the external control A ae SSS gt HAYWARD Page 7 Gas Pressure Testing Measure the inlet Static Pressure Step 1 valve off and Load Pressure Step 2 Measure the outlet Manifold valve on energized Pressure valve on energized The Static amp Load values should Manifold reading should be be within the levels listed on the between 1 8 2 0 w c for Natural Data Plate example on
15. Switch SSS HAYWARD Page 50 Temperature Lock Out Sequence Heaters made after on The default 2 25 2011 serial ee Max temp 21131102103896001 e ia lock out Er settings are 90 for the Pool and 104 for the Spa Use the MODE button and place the heater in STANDBY mode Press and hold the UP and Down buttons at the same time Wait three seconds The SPA indicator light illuminates and the display shows the current Max Temp Lock out setting Use the up and down buttons to set the desired Max Temp Lock out setting Press the mode button and the POOL indicator light illuminates Follow the same sequence as with the SPA settings above Press the mode button again to return to STANDBY When setting the max temp lock out setting the lights and display will flash rapidly SaaS HAYWARD Page 51 Heat Exchanger Flow requirements Flow requirements should be checked to insure proper operation Never allow heater to operate below minimum flow requirements or damage may occur e Flow less than minimum could cause issues such as the heater dry firing or water to boil causing high limits to trip and possible damage to heat exchanger e Flow exceeding maximum flow could cause issues such as damage to the heat exchanger by thinning the tube walls Internal By Pass Flow Requirements 3 l mel e Model Min GPM Internal by pass should y H150FD Le Meshes pet SS
16. d ensure the insulation 1 9 2 9 ohms between Black to on the wiring is not worn Brown wires and between Orange to Yellow wires of P3 If resistance is out of range replace ihe apsigimer o 5 HAYWARD Page 24 Troubleshooting Open FC3 and or F1 Fuse er Su UUS SE a Page 25 Troubleshooting Open FC3 and or F1 Fuse Step 2 Inspect Gas Valve wiring and ensure insulation is not worn If wiring is OK proceed to Step 3 g 3 n k aS Lame a ta y H eo _ a AN i Fj y amp j A d amp f d gt ii re aad A o 1 ee ee ol bu mn 7 P 26 Troubleshooting Open FC3 and or F1 Fuse Measure resistance across Gas Valve terminals greater than 5 ohms and between each terminal to Ground for short there should be no continuity between either terminal to ground Step 3 If a short exists less than 5 ohms replace the Gas Valve Otherwise proceed to Step 4 HAYWARD NV PEPE PP pige Troubleshooting Step 4 Check for faulty ICB wiring and ensure insulation on wiring is not worn nz of fix E gt EI e LLJ SU OP ER e ne 202 EEE wo i a y s13 A 4A 1494V0 y A LE 2e ofl gt 7 hea e F0059 476200 a HAYWARD POOL 2 1101643301 T 6160 6842UER18 MADE IN MEXICO HAYWARTN PAm PROM it HAYWARD Troubleshooting Open FC4 Fuse Step 1 Inspect the Igniter and Blower Wiring and ens
17. er for 5 seconds then automatically restart heater after 2 minutes Step 1 Reset heater cycle line power off and on Step 21 If the HF code is still present the Gas Valve may be defective If 24VAC is not present at gas valve and manifold pressure is present valve is defective Otherwise replace the ICB HAYWARD Page 39 Service Light On LO Code Step 1 LO Code Limit Open Verify pump is running and adequate water is flowing through heater LO Code is normal when the pump is turned off Step 2 Inspect Water Pressure Switch wiring and ensure Wire Harness terminals are securely fastened to the spade terminals on the Water Pressure Switch Remove wires from Water Pressure Switch and measure continuity across the Step 3 terminals while pump is running If open replace Pressure Switch Otherwise go to Step 4 SSS HAYWARD Page 40 Service Light On LO Code Certain applications will require the adjustment of the Pressure Switch refer to Step 4 section of the installation service manual titled Water Pressure Switch Test Adjustment Procedures a A HAYWARD Page 41 Service Light On LO Code Step 7 Applies Only To Indoor Installations Inspect the Vent Pressure Switch Wiring and Hose connections Ensure Wire Harness is securely fastened and tubing is attached to Blower and Vent Pressure Switch Alu NS2 1052 00 FS 45 WC PRV 11016690
18. er temperature exceeds 105 F the heater will HS Code shut down and go into lockout Automatic restart is 2 minutes after water temp drops below 105 F Code could also mean rapid water temperature rise 6 rise in 60 seconds Continued on next page O HAYWARD Page 37 Service Light On HS and PF Codes This code could be in conjunction with a SF code and replacing the Temperature sensor could cure the problem Make sure HS Code Cont d the water connections are not reversed Otherwise replace the ICB Polarity Failure This code will display if 120VAC polarity is reversed PF Code low voltage is detected if the ground path is not sufficient or the ICB is defective Reset is immediate after error is corrected Step 1 Ensure voltage is within 10 or of required voltage If 120 VAC make sure polarity is correct by measuring voltage between Step 2 neutral and ground If voltage present polarity is reversed and needs to be corrected If configured for 240 VAC proceed to Step 3 Step 3 Make sure grounding is correct Otherwise the ICB is defective and needs to be replaced SS HAYWARD Page 38 Service Light On HF Code Heat or Flame Sensed Heat sensed when gas valve should be OFF If flame is HF Code sensed with the gas valve off the control will go into lockout The blower will continuously run until error condition is corrected When corrected control will run blow
19. fuse board Otherwise proceed to Step 8 For Fuse board Older than Nov 2010 Measure for low voltage 22 28 VAC between P5 C pin and bottom of FCS fuse If voltage is not present replace Fuse Board Otherwise measure for low voltage between P5 C pin and top of FCS fuse If voltage is not present check for blown fuse If fuse is blown proceed to Page 12 if voltage is present proceed to Step 8 Step 7 Hr p Troubleshooting Step 8 Inspect ICB wiring and ensure all plugs are securely fastened ones pass TL GR i i 2 oe ir y a a y ea a 1 8 T cer A Ga a ol od ne E S t ES E an T amp a _ a Se a a 0 a te oS a Go bs SiS a amp j l HAYWARD Page 19 Troubleshooting Heater will not power up Step 9 Verify low voltage 22 28 VAC to ICB between R amp C terminals my tt RE ETEN 20 IWS 4 a a AL dd nel A N 2 W m wo D W m Wh If voltage is incorrect replace the Wire Harness If voltage is correct proceed to Step 10 O I ANAL A Dra NV RME VUS 0 Troubleshooting Heater will not power up Step 10 Verify that F1 Fuse 3 AMP on ICB is not open by measuring continuity across the Fuse If fuse is OK proceed to Step 11 If fuse is blown proceed to Page 25 Verify 22 28 VAC is present between COM and AC terminals on ICB board
20. ge selector damaged pinched or Transformer installed worn wiring No No Install proper Is Transformer resistance Yes Replace voltage selector out of range Page 24 Transformer No Flow Chart Open FC3 amp or F1 Fuse Is Low Voltage wiring Correct repair damaged pinched or Gas Valve Correct repair board wiring worn wiring Is Control Board wiring Replace ICB No damaged pinched or Is resistance on Gas Replace Gas Valve less than 5 ohms Valve No SSS HAYWARD Page 55 Flow Chart Open FC4 Fuse and BD Code Is Ignitor and Blower wiring OK Yes Is Ignitor resistance within range Page 30 Yes Is Blower resistance Within range Page 30 Yes Go to Open FC4 Fuse Section Page 29 Is the FC4 Yes Fuse open No Is 110 125 VAC present on pins 3 amp 5 of P6 Replaced damaged wiring Is 110 125 VAC Yes presentonpins1 amp 3 eS Replace of E10 Plug Page 33 the ICB Replace the Wire Harness Is 110 125 VAC present on pins 4 amp 6 of P4 Plug Page 33 Replace Ignitor receptacle Page 33 No Replace Blower Replace the Fuse Board Replace the Transformer HAYWARD Page 56 Flow Chart LO Code Is water flow Is the Water Indoor Installations i Is the pump Yes above Pressure Only Are the High running minimum Switch closed Is the Vent Limit Switches required
21. ntrol Module and Display Interface Assembly m m Bad board Flame present with Gas Valve not energized Maximum return water temperature exceeded and or rapid water temperature rise Ignition Failure Igniter Circuit Open O Water Pressure Switch Vent Pressure Switch or Temperature Limit Switch Fault U 7I Voltage polarity reversed low voltage detected Cp WO Keypad failure IL TI ep TI Temperature Sensor thermistor input failure Page 32 Service Light On BD Code Step 1 BD Code Bad Board or Secondary High Voltage Fault Remove FC4 L Fuse and measure continuity Step 2 Disconnect plug from P6 connector of Fuse Board and measure for 110 125 VAC across Pins 3 and 5 of P6 receptacle on Fuse Board j I F Ve 4 gt A R 1 i A pe Me J m OO If OK proceed to Step 3 Otherwise go to Step 4 SSS HAYWARD Page 33 Service Light On BD Code Step 3 Disconnect plug from E10 connector of ICB and measure for 110 125 VAC across pins 1 and 3 of plug on Wire Harness white and black wires If 110 125 VAC is present replace the ICB Otherwise replace the Wire Harness Step 4 Disconnect plug from P4 connector of Fuse Board and measure for 110 125 VAC between pins 4 and 6 of plug from Transformer grey wires rt lf 110 125 VAC is present replace the Fuse Board Otherwise replace the Transformer amma O HAYWARD
22. p periodically as it could H250FD 25 D be the cause of low or H300FD Aa high water flow through H350FD S the exchanger HAOOFD 30 D I Maximum water flow 125 GPM ao HAYWARD Page 52 Heat Exchanger Failure Modes New Clean Exchanger ra dome oy N WA AN NS W Hi pH Alkalinity or Calcium Hardness sen pro or Mise L Lidl ow Sooted Improper Fuel and Air Mixture High Sanitizer Levels Page 53 Flow Chart Heater will not power up Yes Does Selector ves Is all Fuse Board Yes Yes Go to Open FC1 voltage correct Plug match wiring secure and Fuse Open and FC2 incoming No power correct section Page 23 Is 22 28 VAC present on pins 1 amp 2 of P4 Yes No incoming Ne voltage ET i Page 17 Is 22 28 VAC Is wiring to ICB present on secure and correct P5 FC3 Is 110 125 VAC present on pins 4 amp 6 of P4 Replace Display Board Replace Ohm readings of Replace Wire Harness Is 22 28 VAC present Yes Keypad keypad correct on terminals R amp C of Page 22 Is F1 fuse blown Control Board Yes Replace Is 22 28 VAC present between Com Go to Open FC3 and or Fuse and AC terminals on ICB F1 section Page 25 Board ee Replace ICB a A HAYWARD Page 54 fee Flow Chart Open FC1 amp or FC2 Fuse Is proper Yes Is Transformer wiring yes Correct repair volta
23. riginal wire supplied with the heater must be replaced it must be replaced with 18 AWG UL or Remote Thermostat CSA approved wire rated for 600V and 105 C Connections SPA lt 7 R Connexions de COM Ww REMARQUE thermostat POOL PISCINE lt 4 0 l 1 Le r chauffeur est c bl l usine pour 240 V c a Pour le convertir 120 V c a installer la prise de 120 V t l command Left Junction Box Boite de jonction de gauche c a dans le connecteur correspondant sur la carte de circuit a fusible 2 Pour les connexions d alimentation de terrain utiliser un fil de calibre 14 AWG ou plus gros homologu pour 75 C 167 F au moins 3 Pour les connexions de thermostat de terrain a distance utiliser un fil de calibre 22 AWG ou plus gros 4 Si tout fil fourni initialement avec le r chauffeur doit tre remplac il faut le remplacer par un fil de calibre 18 AWG approuv UL ou CSA homologu pour 600 V et 105 C GY R BK Water Pressure Switch Pressostat d eau BL j BL R R G Blower Vacuum BK Switch Commutateur a vide Ww de soufflante m 4 Vent Pressure Pressostat Switch d vent Indoor mod les d int rieur Models Only seulement ee ee See eee eae i GND Power Connections G si Y chee Connexions d alimentation BK L L1 Remote Thermostat 0 POOL PISCINE Connections Ww
24. ure the insulation is not worn If wiring is OK proceed to Step 2 Otherwise replace the defective componeni s HAYWARD PE NOOS Page 29 Troubleshooting Open FC4 Fuse Step 2 Disconnect the Igniter Plug from the ICB and measure resistance across the Igniter Resistance should be 8 25 ohms between 20 140 F sue 3 11016 1 IN 1 sa MO 4 a If resistance is out of range replace the Igniter If OK proceed to Step 3 For Models Manufactured Before September 2010 Disconnect the Blower Plug from Step 3 ICB and measure the Blower resistance Resistance should be 8 9 ohms from Black to Red wires and White to Blue wires ee STS O HAYWARD If resistance is out of range replace the Blower Page 30 Troubleshooting Open FC4 Fuse For Models Manufactured After September 2010 Disconnect Blower Plug from ICB Step 3 and measure resistance between the RED BLU wires together and the BLK WHT wires together This resistance should be 4 5 ohms If resistance is out of range replace the Blower SSS HAYWARD Page 31 SSS HAYWARD Diagnostic Codes Below is a list of all Diagnostic Codes for the UHS Heater Troubleshooting Steps for each Code are covered on the following pages Diagnostic Code Description gt O Blower Vacuum Switch closed gt O Blower Vacuum Switch open Bad board or secondary high voltage fault FT Communication Error Between Co
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HxxxFD(N/P)