Service Manual
Contents
1. 104 OAAOZE O esINd MAN NVA 40 ZNO U IH LZNO 9ZNO y jo uonoeuuo 99 0 UOIJJSUUOD NO OVA ZNO LNO uBiu jo uonoeuuo 3ndino L Z NO L 6NO UBIH 3ndino LENO A 0 zutd 21 0 4 AZI 9PGUld INdINO LENO AN TVA 104100 20 LNdNI C3IVOG TOuLNOD LINNA AGO y ejdsiq VOLNO Josues 6NO 10sues AZLOd GND AOLEDG uez JOOPUI PNI AGO GINI Ave OG N eu eAnejes 9LNO eBeyoA NI 12. JOOPU AGO GINI Ave OC N eu 9LNO AOEZOV OV 7 IN TVA LNdLNO 40 LNdNI TOXLNOO LINN YOOUNI 1052 80C 0c 9ZIS SUMIM pm SIHA HOSNZS AAUNIVHAANAL 4 AAN IVHAANAL YOSNAS sisseyo 2149919 941 H Jo 1 91149919 941 EO van ayog L INVHOVIG ONIHIM LINN 1 LINN HOOONI 5 2111 MOTT3A P v SIA 160 5 B gt 05455 3919 1 H dau EC g 4 DS 90 S 2 WOSNaS NOOY H H VAN luo Oq Bundope a Six ou ejqeorddy P i I ss ns l E ve NI 16 FAN AND MOTOR SPECIFICATIONS Rn 12 12 18 24K 30K 115V 115V 208 230 V 208 230 V 208 230 V 208 230 V 208 230 V _
3. 6NO unuixeur eoeueojurl 10sues punoJc AZLOd GNO AOLEDG uej JOOPUI AGO GLNO ga N 9LNO AOEZOV OV NI 7 INTIVA 104100 40 1 TOWLNOO 4052 80 81 2716 SUMIM ZI 814 AlddNS di Cl H 91919119 WNOLLdO NN m 2 mt 44 WVYOVIC 0 C HIRAMA RIEMEN WNOUAD 2 52111 m SOC LT B C 17 an 9 24 53 mn 106 HS HI DEET cE M B god Sj 40 7 NIYIN 34 JOLOVHMH 3719 ama van 2 c z 20 NVJ 3000 110 14 AZLOQ unuixeur jeuondo Jedde1sS VINOD AGO y veomjeg UINWIXeWU s
4. V LHOLON 9NIMS 91919181916 2 lel tel ed tol lel lel FU au V 10018 JWHOSI L 305135 3301V 3dW431 ELL YOSNAS vl 1N318WV 3000100 IO LLNOO 40553840 OLV 8108 15 JossaJduuoo 104 A09 0 esing MAN uBiu y jo uonoeuuo 3ndino SNO LSNO AG 0 7 ZUld AO 6NO AG 0 GUId AG 8NO cCH3lV3H andino LYALVSH AOEZ andino U IH END AG 0 ZUld AG EENI 20 0 3ndino LLNO uBiu y jo UORISUUOD 5 AOEZ ZNO LNO IN TVA 104100 40 1 q IVOG IO LELNOO LINN YOOGLNO ASOG 599 y Kejdsiq VOLNO Josues eJnjeJeduJue 6NO JOSUSS WOOH 8N9 punols Ld 9 1010 Jeddeis GN9 6920
5. VOLNO Josues 6NO 10sues punoio AZLOd GNO AOLEDG uez JOOPUI AGO GLNO Atz ga N eui eAnejes 9LNO ASVLOV JOMOd LLNO 1 AN TVA 104110 40 LNdNI IO LLNOO 11 60 59716 SUHIM 01 SIHA Jej ojuo M ZS No qo STE ennt END A s 3 3 00 LINN YOOGLNO paguo 04 VISI DNWNOldO Wo m RR RE 010 1010 dd 2 17 10521111 3014 90 8401 1008 NI s 20 I I yeay 104 syed 1 1 ONIYIM YOOdLNO atin 9209 499 qui Movig el awed peuseg 309135 394 9510 YOSNSS 11318 1 MOV la WOSN3S LYH pur SINV ID VIG ONIMIM 12
6. class 3916 5 class 5 Input W 42 42 46 46 116 145 150 Output W 40 40 40 40 50 120 120 ee Amps 0 14 10 0 14 10 0 42 10 0 42 10 0 95 10 0 47 1000 1 21 10 6 Amps 0 14 0 14 0 42 0 42 0 95 0 47 1 21 current Rated HP HP 0 053 0 053 0 053 0 053 0 067 0 16 0 16 Speed pia m 800 700 600 800 700 600 800 700 600 800 700 600 800 700 600 850 750 700 850 800 750 Saed 900 900 900 900 900 1050 1050 in Max W 42 42 46 46 116 145 150 input S 9K 12K 9K 12K 18K 24K 30K stem Size 115V 115V 208 230V 208 230V 208 230V 208 230V 208 230V Indoor Sound Pressure cooling mode at different speeds 9 dBa 42 34 27 42 34 27 42 34 27 42 34 27 46 5 40 33 50 45 39 50 45 39 Indoor Sound Pressure heating mode at different 9 dBa 40 33 26 41 34 27 40 33 26 41 34 27 45 39 32 47 44 38 47 44 38 Outdoor sound pressure level dBa 55 5 56 55 5 56 59 63 17 ENVIRONMENTAL SPECIFICATIONS 9K 12K 9K 12K 18K 24K 30K 115 115 208 230V 208 230V 208 230V 208 230V 208 230V Cooling Outdoor Min 4 122 4 122 4 122 4 122 4 122 4 122 4 122 Max DB C 20 50 20 50 20 50 20 50 20 50
7. 61 APPENDIX 2 Temperature Sensor Resistance Value Table for T5 C K C F K Ohm C F K Ohm C F K Ohm C F K Ohm 20 4 542 7 20 68 68 66 60 140 13 59 100 212 3 702 19 2 511 9 21 70 65 62 61 142 13 11 101 214 3 595 18 0 483 22 72 62 73 62 144 12 65 102 216 3 492 17 1 455 9 23 73 59 98 63 145 12 21 103 217 3 392 16 3 430 5 24 75 57 37 64 147 11 79 104 219 3 296 15 5 406 7 25 77 54 89 65 149 11 38 105 221 3 203 14 7 384 3 26 79 52 53 66 151 10 99 106 223 3 113 13 9 363 3 27 81 50 28 67 153 10 61 107 225 3 025 12 10 343 6 28 82 48 14 68 154 10 25 108 226 2 941 11 12 325 1 29 84 46 11 69 156 9 902 109 228 2 86 10 14 307 7 30 86 44 17 70 158 9 569 110 230 2 781 9 16 291 3 31 88 42 33 71 160 9 248 111 232 2 704 8 18 275 9 32 90 40 57 72 162 8 94 112 234 2 63 7 19 261 4 33 91 38 89 73 163 8 643 113 235 2 559 6 21 247 8 34 93 37 3 74 165 8 358 114 237 2 489 5 23 234 9 35 95 35 78 75 167 8 084 115 239 2 422 4 25 222 8 36 97 34 32 76 169 7 82 116 241 2 357 3 27 211 4 37 99 32 94 77 171 7 566 117 243 2 294 2 28 200 7 38 100 31 62 78 172 7 321 118 244 2 233 1 30 190 5 39 102 30 36 79 174 7 086 119 246 2 174 0 32 180 9 40 104 29 15 80 176 6 859 120 248 2 117 1 34 171 9 41 106 28 81 178 6 641 121 250 2 061 2 36 163 3 42 108 26 9 82 180 6 43 122 252 2 007 3 37 155 2 43 109 25 86 83 181 6 228
8. AN TVA 104100 10 LNdNI 1052 80C 60 59716 SUMIM TT SIHA Fs r WNOLLdO mmm mm 4 10 1710511 00 Fld Yaa e e indu JeMod A 6 ans avn IVNOLLdO IO LLNOO ALIHM ZENO VON VEN 000200 OEN9 62ND 800 900099 Tas 95 1 5 gt 805435 INL VIJL 815430109 YOSNAS ana IN rL 05538410 13 0 12 98844 8 18 0 891 AS LNO AG 0 ZUld AS OLNO JossaJduuoo AOZE O esind 3ndino M An uBiu jo uonoeuuo 3ndino ELNO ZLNO 20 0 3ndino GNO HA LVAH 40 3ndino 9LNO LLNO U IH NO uBiu y jo uonoeuuo AOEZ ZNO INTIVA 104100 40 1 q IVOG IO LLNOO AGO y ejdsiq VOLNO Josues
9. 3 9 1102 LI n4 4 T 0 ed 1 Yw Q 22 17 41 Over voltage or too low voltage protection diagnosis and solution P1 Error Code P1 Malfunction decision conditions An abnormal voltage rise or drop is detected by checking the specified voltage detection circuit Power supply problems e System leakage or block Supposed causes PCB faulty Troubleshooting Disconnect the unit from power supply Check if the power supply is normal Restart the unit when correct voltage is present Check if all the connections Correct the connections or and wires are good replace the wires Power on and when the unit is in standby check if Replace the IPM the voltage between P board tit is and N is DC 310V to 380V ane Start up the unit measure the voltage between mam Pes and N Is it in 220V 400V Reference the following figure Yes Replace outdoor main PCB 44 Fig 47 Test NOTE Measure the DC voltage between the P and N ports The normal value should be around 310V 45 High temperature protection of compressor top diagnosis and solution P2 Error Code P2 Malfunction decision conditions If the sampling voltage is not 5V the LED will display the failure Supposed causes Power supp
10. 20 50 20 50 Indoor Min F 63 90 63 90 63 90 63 90 63 90 63 90 63 90 Max DB C 17 32 17 32 17 32 17 32 17 32 17 32 17 32 Indoor Min F 59 84 59 84 59 84 59 84 59 84 59 84 59 84 Max WB C 15 29 15 29 15 29 15 29 15 29 15 29 15 29 o Heating O Outdoor DB F 4 86 4 86 4 86 4 86 4 86 4 86 4 86 Min Max C 20 30 20 30 20 30 20 30 20 30 20 30 20 30 Outdoor WB F 4 77 4 77 4 77 4 77 4 77 4 77 4 77 Min Max C 20 25 20 25 20 25 20 25 20 25 20 25 20 25 Indoor DB Min F 32 86 32 86 _Max 0 30 0 30 32 86 0 30 32 86 0 30 32 86 0 30 32 86 0 30 32 86 0 30 32 86 32 86 32 86 32 86 32 86 32 86 32 86 ec 0 30 0 30 0 30 0 30 0 30 0 30 0 30 5 Temperature range DB 2 C 32 86 32 86 32 86 32 86 32 86 32 86 32 86 0 30 0 30 0 30 0 30 0 30 0 30 0 30 Operation Humidity 0 80 0 80 0 80 0 80 0 80 0 80 0 80 Ambient Humidity 0 80 0 80 0 80 0 80 0 80 0 80 0 80 AIRFLOW SPECIFICATIONS 9K 12K 9K 12K 18K 24K 30K System size 115V 115V 208 230V 208 230V 208 230V 208 230V 208 230V Turbo 380 380 380 380 680 870 870 High 360 360 360 360 650 780 780 Ind CFM neon Medium 290 300 290 300 450 620 620 Low 210 210 210 210 310 520 520 Outdoor CFM 1200 1200 1200 1200 1390 2130 2130 AIR THROW DATA Unit Capacity Max Approximate Air Throw ft m Approxima
11. Supposed Causes Installation mistake e PCB faulty Trouble shooting Shut off the power supply and turn it on 5 seconds later Is it still displaying the error code Yes Y If the EEPROM chip is welded on main PCB replace the main PCB directly Otherwise check whether the EEPROM chip is plugged into main PCB well No gt Correct the connection Yes y Replace the main PCB EEPROM a read only memory whose contents can be erased and reprogrammed using a pulsed voltage 30 Indoor outdoor unit s communication error diagnosis and solution E1 Malfunction decision conditions Indoor unit does not receive feedback from outdoor unit in 110 seconds and this condition occurs four times continuously Supposed Causes Indoor and outdoor unit communications fault Troubleshooting Power off then turn off the unit 5 seconds later Is the error still displaying after several minutes Measure DC voltage Is it moving alternately with positive value The voltage between L2 and S of outdoor unit Connect the red pin of multimeter with L2 port and the black pin with the S port Check all the wiring with outdoor units No Is the wiring to the outdoor main PCB connected correctly Yes Check all the wiring with indoor units Measure DC voltage between L2 and S terminals do you have a 50 to 50VDC fluctuating vol
12. frequency will rise to the higher level frequency will increase twice at most I3COOL Decrease I2COOL I1 COOL Fig 21 Zones I3COOL I2COOL I1COOL mean different running current value Compressor stops Decrease Decrease the running frequency to the lower level Hold Keep the current frequency Resume No limitation for frequency NOTE When AC is in hold zone for 3 minutes the compressor frequency rises to the higher level Frequency increases twice at most When T1 Ts stays in the same temperature zone for 3 minutes the compressor runs according to the following rules Increase the frequency to the higher level until F10 2 Keep the current frequency 3 Decrease the frequency to the lower level until F1 4 Run at F1 for 1h if T1 Ts AT gt 42 8 F 6 C the compressor will stop Meanwhile the compressor running frequency is limited by the current TA CoolT4Zone5l 50 49 CoolTAZone4l 45 44 41 CoolT4Zone3l CoolT4Zone2l CoolT4Zone Fig 22 Running frequency speed o j M M M Z M M M Z gene L L L D 7 ne Fig 23 Indoor fan running rules H oO ul In the cooling mode indoor fan runs all time and the speed be selected as high medium low auto and silent mode ib D 3 tij 24 T1 Ts H 42 8 F
13. material AS AS AS AS AS AS AS GL 98 655 N GL 98 655 N GL 98 655 N GL 98 655 N GL 107 5 760 IN GL 118 895 IN GL 118 895 IN Diameter inch 98 98 98 98 107 5 118 118 Height inch 655 655 655 655 760 895 895 _ material AS AS AS AS AS AS AS t ZL 421 117 8 3K ZL 421 117 8 3K ZL 421 117 8 3K ZL 421 117 8 3K ZL 460 180 10 3N 21 560 139 12 3 ZL 560 139 12 3KN 5 Diameter inch 421 421 421 421 460 560 560 O Height inch 117 117 117 117 180 139 139 Model WZDK20 38M WZDK20 38M WZDK20 38G WZDK20 38G WZDK58 38G WZDK60 38G WZDK60 38G Type DC DC DC DC DC DC DC Phase 3 3 3 3 3 3 3 FLA 0 17 0 17 0 07 0 07 0 17 0 23 0 23 Insulation E E E E E E E class IPXO IPXO IPXO IPXO 5 class 2 Input W 25 25 22 22 52 72 72 Output W 20 20 20 20 58 60 60 5 bale Amps 0 17 10 0 17 10 0 07 10 0 07 10 0 17 10 0 23 10 0 23 10 E PaA Amps 0 17 0 17 0 07 0 07 0 17 0 23 0 23 current Rated HP HP 0 027 0 027 0 027 0 027 0 077 0 08 0 08 Speed pd m 4300 1170 900 700 1300 1170 900 700 1300 1170 900 700 1300 1170 900 700 1300 1170 900 700 1250 1 5 1100 90 250 1200 1100 900 Raise revii 1350 1350 1350 1350 1350 1350 1350 RPM in Max W 25 25 22 22 52 72 72 input Model WZDK40 38G 1 WZDK40 38G 1 WZDK40 38G W 1 WZDK40 38G W 1 ZKFN 50 8 2 WZDK120 38G 1 WZDK120 38G W Phase 3 3 3 3 3 3 3 FLA 0 14 0 14 0 42 0 42 0 95 0 47 1 21 Type DC DC DC DC DC DC DC Insulation
14. 123 253 1 955 4 39 147 6 44 111 24 85 84 183 6 033 124 255 1 905 5 41 140 4 45 113 23 89 85 185 5 844 125 257 1 856 6 43 133 5 46 115 22 89 86 187 5 663 126 259 1 808 7 45 127 1 47 117 22 1 87 189 5 488 127 261 1 762 8 46 121 48 118 21 26 88 190 5 32 128 262 1 717 9 48 115 2 49 120 20 46 89 192 5 157 129 264 1 674 10 50 109 8 50 122 19 69 90 194 5 130 266 1 632 11 52 104 6 51 124 18 96 91 196 4 849 12 54 99 69 52 126 18 26 92 198 4 703 13 55 95 05 53 127 17 58 93 199 4 562 14 57 90 66 54 129 16 94 94 201 4 426 15 59 86 49 55 131 16 32 95 203 4 294 16 61 82 54 56 133 15 73 96 205 4 167 17 63 78 79 57 135 15 16 97 207 4 045 18 64 75 24 58 136 14 62 98 208 3 927 19 66 71 86 59 138 14 09 99 210 3 812 62 APPENDIX 3 84 183 2 115 239 125 6 ee ae ea 5 Ml Ral i E 63 Copyright 2015 Carrier Corp 7310 W Morris St Indianapolis IN 46231 Edition Date 04 15 Catalog No 38 40MAQ 01SM ss Manufacturer reserves the right to ch i ange at any time specifications and desi i i i gns without notice and without obligations Replaces NEW 64
15. 6 0 C H L 0 75 L 41 0 F 5 0 C H L 0 5 L 39 2 F 4 0 C H L 0 25 L 36 5 F 2 5 C L 33 8 F 1 0 C Fig 24 Condenser temperature protection T1 Ts 39 2 4 37 4 GC 34 7 F 1 5 C 33 85 1 020 Fig 25 Condenser temperature protection Condenser temperature protection The condenser temperature protection function acts as follows Ifthe condenser coil temperature is between 131 F and 140 S5C lt T3 lt 60 C the compressor frequency will decrease to a lower level until it reaches the lowest value F1 It then runs at this F1 frequency Once T3 lt 129 F 54 C the compressor will continue running at the current frequency Condenser temperature protection 131 55 lt T3 140 F 60 C The compressor frequency will decrease to the lower lever until to F1 and then runs at F1 If T3 lt 129 2 F 54 C the compressor will keep running at the current frequency T3 lt 125 6 F 52 C the compressor will not limit the frequency and resume to the former frequency When the coil temperature reaches a value lower than 126 F 52 C the compressor will not limit the frequency and resumes to the required frequency If T3 gt 140 F 60 C for 5 seconds the compressor will stop and restart once the coil temperature reaches a value lower than 126 F 52 C Evaporator Temperature Protection The evaporator temperature protection function acts
16. 9 97 7 96 80 6F 27C 66 2F 19C SC 9 59 11 95 12 37 9 28 7 23 6 02 Input 0 57 0 94 1 59 1 24 1 48 1 38 TC 14 7 19 03 20 18 15 36 12 02 9 97 89 6F 32C 73 4F 23C SC 9 08 11 72 12 5 9 69 7 85 6 89 Input 0 6 0 97 1 62 1 27 1 51 1 41 TC 19 5 20 69 21 43 18 05 14 27 13 32 69 8F 21C 59F 15C SC 15 15 15 61 15 49 14 23 10 03 8 78 Input 1 2 1 88 2 29 2 14 1 9 1 86 TC 20 01 21 21 22 31 18 51 15 08 13 3 75 2F 24C 62 6F 17C SC 15 25 15 71 15 59 14 33 10 13 8 88 24 Input 1 2 1 87 2 3 2 21 2 14 1 92 208 230V TC 20 54 21 75 23 21 18 98 15 91 13 3 80 6F 27C 66 2F 19C SC 15 35 15 81 15 69 14 43 10 23 8 98 Input 1 21 1 86 2 31 2 26 2 16 1 93 TC 20 61 22 94 24 4 21 84 19 17 16 66 89 6F 32C 73 4F 23C SC 15 58 16 04 15 92 14 66 10 46 9 21 Input 1 22 1 87 2 34 2 33 2 32 1 96 TC 27 33 27 43 27 51 22 77 18 29 17 32 69 8F 21C 59F 15C SC 19 4 19 48 19 56 17 21 16 32 15 28 Input 2 28 3 29 3 63 3 11 2 35 2 25 TC 29 41 30 01 29 82 24 53 20 71 18 24 75 2F 24C 62 6F 17C SC 19 95 20 47 20 07 17 73 17 24 16 29 30 Input 2 31 3 32 3 68 3 17 2 41 2 31 208 230V TC 31 57 32 68 32 21 26 37 23 2 19 21 80 6F 27C 66 2F 19C SC 20 55 21 52 20 65 18 3 18 21 17 35 Input 2 35 3 35 3 74 3 23 2 47 2 38 TC 32 6 33 71 33 24 27 4 24 23 20 24 89 6F 32C 73 4F 23C SC 20 9 21 87 21 18 65 18 56 17 7 Input 2 42 3 42 3 81 3 3 2 54 2 45 LEGEND DB Dry Bulb WB Wet Bulb TC Total Net Cooling Capacity 1000 Btu hour SC Sensible Capacity 1000 Btu hour Input Total po
17. condition items are satisfied then the program judges if T2 has decreased more than 41 F 2 C When T2 has decreased more than 41 F 2 C enter the defrosting mode No matter what value T4 is if the machine runs with T3 lt 37 4 F 3 C for more than 120 minutes and T3 keeps lower than TCDI 39 2 F 4 C for more than 3 minutes the machine will enter defrosting mode no matter if T2 drops more than 41 F 5 C or not Condition of ending defrosting If any one of the following items is satisfied the defrosting will finish and the machine will turn to normal heating mode rises to be higher than 1 F T3 keeps to be higher than TCDE 4 F for 80 seconds The machine has run for 10 minutes in defrosting mode Defrosting action Compressor off on 4 way valve off Outdoorfan off on Indoor fan off langer than 10m Fig 32 9k 12k 18k 24k 30k models 10s XX 60s On Compressor bd off on 4 way valve off Outdoorfan gt off Indoor fan off Fig 33 9 12 18k 24k 30k models Evaporator coil temperature protection 2 gt TEH2 F the compressor running frequency decreases to the lower level and runs for 20s When the frequency decreases to F2 and the T2 is still over TEH 2 F for 3 minutes the compressor stops 21 AUTO MODE In the Auto mode the temperature can be set to values
18. motor control chip is in fan motor Measure the resistance value of each winding by using the tester If any resistance value is zero the fan motor must have problems and needs to be replaced 1 3 4 5 6 Red Black White Yellow Blue Fig 37 Fan motor Index 2 1 Indoor or Outdoor DC Fan Motor control chip is in the fan motor Power on and when the unit is in standby measure the voltage of pin 1 pin3 pin4 pin3 in the fan motor connector If the value of the voltage is not in the range showing in the table below the PCB has an issue and needs to be replaced 1 3 4 5 6 Red Black White Yellow Blue Fig 38 Control chip DC motor voltage input and output No Color Signal Voltage 1 Red Vs Vm 280V 380V 2 3 Black GND OV 4 White Vcc 14 14 5V 5 Yellow Vsp 0 5 6 6 Blue FG 14 17 5V 35 2 Outdoor DC Fan Motor control chip is in the outdoor PCB UVW Feedback 1 5 Fig 39 Outdoor DC Fan Motor No 1 2 3 4 5 Color Orange Grey White Pink Black Signal Hu Hv Hw Vcc GND Color Red Blue Yellow Signal W V U 1 Release the UVW connector Measure the resistance of U V U W V W If the resistance is not equal to each other the fan motor has an Issue and needs to be replaced Otherwise proceed to step 2 2 Power on and when the unit is in standby measure the voltage of pin 4 5 in the fee
19. refrigerant charge between Oz ft Standard Max piping g m 0 16 15 0 16 15 0 16 15 0 16 15 0 16 15 0 32 30 0 32 30 length Gas Pipe size in connection type mm 3 8 9 52 1 2 12 7 3 8 9 52 1 2 12 7 1 2 12 7 5 8 16 5 8 16 Liquid Pipe size in 1 4 in 1 4 in 1 4 in 1 4 in 1 4 in 3 8 in 3 8 in connection type mm 6 35 6 35 6 35 6 35 6 35 9 52 9 52 Refrigerant R410A R410A R410A R410A R410A R410A R410A 2 Heat Pump Models Lbs 9 Charge Amount kg 2 76 1 25 2 76 1 25 2 76 1 25 2 76 1 25 4 19 1 90 5 18 2 35 6 62 3 00 Above charge is for piping runs up to 25 ft 7 6 SYSTEM EVACUATION AND e For piping runs greater than 25 ft 7 6 m add CHARGING refrigerant up to the allowable length as specified below The outdoor unit Sizes 09 18 has an electronic expansion valve to manage the refrigerant flow of the connected fan coil Sizes 24 and 30 have capillary tube metering devices in the outdoor unit Long Line Applications 1 No change in line sizing is required 2 Add refrigerant per table below ADDITIONAL CHARGE TABLE Total Line Additional Charge oz ft Unit Length ft ft m Size 10 25 gt 25 82 gt 82 164 Min Max 3 8 8 25 25 50 9 12 0 16 10 98 None 30 164 0 32 0 32 3 Reduction in capacity due to long lines can be calculated from the chart below CAUTION UNIT DAMAGE
20. stump SPECIFICATIONS HEAT PUMP ONLY UNITS MAQ SERIES Size 9 12 9 12 18 24 30 System Outdoor Model 38MAQB09 1 38 12 1 38 09 3 38MAQB12 3 38 18 3 38MAQB24 3 38MAQB30 3 Indoor Model 40 09 4 40MAQB12B 1 40 9 43 12 3 18 3 40MAQB24B 3 40MAQB30B 3 Energy Star YES YES YES YES VES YES NO Cooling Rated Capacity Btu h 9 000 12 000 9 000 12 000 17 500 23 000 30 000 Cooling Cap Range Min Max Btu h 3500 11000 4000 13000 3500 11000 4000 13000 4500 18000 5500 23500 8000 30500 SEER 23 5 21 5 23 5 21 5 19 5 20 0 16 5 EER 14 5 13 14 5 13 12 5 12 5 9 5 Heating Rated Capacity Btu h 10 000 12 000 10 000 12 000 18 000 25 000 32 000 Heating Cap Range Min Max Btu h 4 500 11 500 5 000 13 500 4 500 11 500 5 000 13 500 5 500 19 000 6 000 26 000 9 000 34 000 HSPF 10 0 10 0 10 0 10 0 9 6 10 0 9 6 COP W W 3 36 3 22 3 66 3 36 3 36 3 22 2 92 A Wireless 5 F C Standard Wired Remote Controller F C Convertible Optional Cooling Outdoor DB Min Max F 4 122 4 122 4 122 4 122 4 122 4 122 4 122 Operating Heating Outdoor DB Min Max 4 86 4 86 4 86 4 86 4 86 4 86 4 86 Range Cooling Indoor DB Min Max F 63 90 6
21. y 51 Electrical parts How to remove the electrical parts 1 After removing the front panel from procedure 1 pull out the room temp sensor and evaporator coil sensor Remove the grounding screws 2 Pull out the clip toward the left side and open the cover 3 Swing motor 3 Remove the fixing screw and open the electrical box cover 4 Pull out the connectors of the swing motor and fan motor 5 Remove the fixing screw and then remove the electronic control box and air outlet assembly 52 Room temp sensor Grounding screws i m MAMANS NAT NS Clip for electronic control box cover Fan motor connector and swing motor Evaporator coil temp sensor Fixing screw How to remove the evaporator 1 After removing front panel ass y and electrical parts following procedure 1 and procedure 2 remove the pipe holder at the rear side of the unit 3 Evaporator 2 Remove the two screws on the evaporator at the base bearing side 3 Remove two screws on the evaporator at the fixed plates and then lift the evaporator ass y Two screws at the base bearing side Two screws at the fixed plates 53 4 Fan and motor How to remove the fan and motor 1 After remove the evaporator ass y following procedure 1 procedure 2 and procedure 3 remove the three screws fixing the cove
22. 0 51 59F 15C Input 3 79 3 99 3 69 3 43 3 2 2 96 2 82 2 61 TH 39 6 39 9 36 55 33 84 30 95 28 58 26 47 19 96 64 4F 18C 30 Input 3 35 4 23 3 85 3 65 3 24 3 11 3 04 2 76 208 230V TH 36 3 38 6 35 62 33 07 29 62 26 54 24 13 19 43 69F 20 5C Input 3 45 4 46 4 01 3 9 3 31 3 2 3 16 2 89 TH 32 9 35 2 32 22 29 67 26 22 23 14 20 73 16 03 71 6F 22C Input 3 68 4 69 4 24 4 13 3 54 3 43 3 39 3 12 LEGEND DB Dry Bulb WB Wet Bulb TH Total Net Heating Capacity 1000 Btu hour Input Total Power kW 20 REFRIGERATION CYCLE DIAGRAMS INDOOR OUTDOOR Electronic SIDE CAPILIARY TUBE expansion valve CAPILIARY TUBE d 0000 x 10090 1 3 5064 2 WAY VALVE T3 Condenser temp sensor HEAT EXCHANGE EVAPORATOR HEAT Ti Room temp T4 Ambient EXCHANGE sensor temp sensor CONDENSER T2 Evaporator temp sensor T GAS SIDE Q VALVE Accumulator 4 Otway VALVE t gt G Discharge j p temp Sensor 4 Compressor gE 2222222 NENNEN _ Fig 15 Heat Pumps REFRIGERANT LINES General refrigerant line sizing 1 The outdoor units are shipped with a full charge of R410A refrigerant All charges line sizing and capacities are based on runs of 25 ft 7 6 m For runs over 25 ft 7 6 m consult long line section on this page for proper charge adjustments 2 Minimum refrige
23. 3 90 63 90 63 90 63 90 63 90 63 90 Heating Indoor DB Min Max 32 86 32 86 32 86 32 86 32 86 32 86 32 86 Total Piping Length Ft 82 82 82 82 98 98 164 Piping Piping Lift Ft 32 32 32 32 65 65 82 Pipe Connection Size Liquid In 1 4 1 4 1 4 1 4 1 4 3 8 3 8 Pipe Connection Size Suction In 3 8 1 2 3 8 1 2 1 2 5 8 5 8 Type R410A Refrigerant Design Pressure PSIG 550 550 550 550 550 550 550 Metering Device EEV EEV EEV EEV EEV Capillary Tube Capillary Tube Refrigerant Charge Lb 2 76 2 76 2 76 2 76 4 19 5 18 6 62 Face Area Sq Ft 9 2 9 2 9 2 9 2 16 0 21 1 17 2 Outdoor Coil ROMS 2 2 2 2 2 3 3 Fins per inch 21 21 21 21 18 18 17 Circuits 4 4 4 4 6 8 6 Face Area sq ft Sq Ft 2 2 2 2 2 2 2 2 2 6 3 7 3 7 No ROWS 2 2 2 2 2 3 3 Fins per inch 20 20 20 20 20 18 18 Circuits 3 3 3 3 4 7 7 Type Hermetic Rotary DC Inverter Compressor Model ASM98D1UFZA ASM108D1UFZA ASM98D1UFZA ASM108D1UFZA ASM135D23UFZ DA250S2C 30MT TNB306FPGMC L Compressor Oil Type VG74 VG74 VG74 VG74 VG74 VG74 FV50S Oil Charge Fl Oz 12 5 12 5 12 5 12 5 15 2 27 7 36 2 Rated Current RLA 5 3 5 7 5 3 5 7 7 3 8 8 13 5 Voltage Phase Cycle 415 1 60 115 1 60 208 230 1 60 208 230 1 60 208 230 1 60 208 230 1 60 208 230 1 60 Electrical Power Supply Indoor unit powered from outdoor unit MCA A 15 15 15 15 15 15 20 MOCP Fuse Rating A 20 20 15 15 20 25 30 Unit Width In 31 9 31 9 9 31 9 33 3 37 2 37 2 Unit Height In 22 0 22 0 0 22 0 6 31 9 31
24. 40MAQ 38MAQ High Wall Ductless Split System Sizes 09 to 30 turn to the experts Service Manual TABLE OF CONTENTS PAGE SAFETY CONSIDERATIONS 1 5 5 dpi deos egi 1 MODEL SERIAL NUMBER NOMENCLATURE 2 STANDARD FEATURES AND ACCESSORIES 3 SPECIFICATIONS HEAT PUMP ONLY UNITS MAQ 4 DIMENSIONS INDOOR 5 DIMENSIONS OUTDOOR 6 CLEARANCES INDOOR 9 CLEARANCES OUTDOOR 4425 9 WIRING y ni ree 10 CONNECTION DIAGRAMS 11 WIRING DIAGRAMS 12 FAN AND MOTOR SPECIFICATIONS 17 SOUND DATA SPECIFICATION 17 REFRIGERATION CYCLE DIAGRAM 21 REFRIGERANT LINES 21 SYSTEM EVACUATION AND CHARGING 22 CONTROL SYSTEM hn Re 24 SEQUENCE OF OPERATION 29 MODES OF OPERATION 25 TROUBLESHOOTING 20 APPENDIX 61 SAFETY CONSIDERATIONS Installing starting up and servicing air conditioning equipment can be hazardous due to system pressures electrical components and equipment location roofs elevated structures etc Only t
25. 5 167 1 38703 115 239 0 41164 4 25 44 36 97 6 13059 76 169 1 34105 116 241 0 4006 3 27 41 5878 37 99 5 87359 77 171 1 29078 117 243 0 38991 2 28 39 8239 38 100 5 62961 78 172 1 25423 118 244 0 37956 1 30 37 1988 39 102 5 39689 79 174 1 2133 119 246 0 36954 0 32 35 2024 40 104 5 17519 80 176 1 17393 120 248 0 35982 1 34 33 3269 41 106 4 96392 81 178 1 13604 121 250 0 35042 2 36 31 5635 42 108 4 76253 82 180 1 09958 122 252 0 3413 3 37 29 9058 43 109 4 5705 83 181 1 06448 123 253 0 33246 4 39 28 3459 44 111 4 38736 84 183 1 03069 124 255 0 3239 5 41 26 8778 45 113 4 21263 85 185 0 99815 125 257 0 31559 6 43 25 4954 46 115 4 04589 86 187 0 96681 126 259 0 30754 7 45 24 1932 47 117 3 88673 87 189 0 93662 127 261 0 29974 8 46 22 5662 48 118 3 73476 88 190 0 90753 128 262 0 29216 9 48 21 8094 49 120 3 58962 89 192 0 8795 129 264 0 28482 10 50 20 7184 50 122 3 45097 90 194 0 85248 130 266 0 2777 11 52 19 6891 51 124 3 31847 91 196 0 82643 131 268 0 27078 12 54 18 7177 52 126 3 19183 92 198 0 80132 132 270 0 26408 13 55 17 8005 53 127 3 07075 93 199 0 77709 133 271 0 25757 14 57 16 9341 54 129 2 95896 94 201 0 75373 134 273 0 25125 15 59 16 1156 55 131 2 84421 95 203 0 73119 135 275 0 24512 16 61 15 3418 56 133 2 73823 96 205 0 70944 136 277 0 23916 17 63 14 6181 57 135 2 63682 97 207 0 68844 137 279 0 23338 18 64 13 918 58 136 2 53973 98 208 0 66818 138 280 0 22776 19 66 13 2631 59 138 2 44677 99 210 0 64862 139 282 0 22231
26. 9 Unit Depth In 12 2 12 2 2 12 2 6 15 6 15 6 Outdoor Net Weight Lbs 82 5 82 5 82 5 82 5 102 5 137 6 157 6 Airflow CFM 1200 1200 1200 1200 1390 2130 2130 Sound Pressure dB A 56 56 56 56 59 60 63 Unit Width In 32 9 32 9 32 9 32 9 39 0 46 7 46 7 Unit Height In 11 0 11 0 11 0 11 0 12 4 13 4 13 4 Unit Depth In 7 8 7 8 7 8 7 8 8 6 10 2 10 2 indoor Net Weight Lbs 19 2 19 2 19 2 19 2 26 5 40 1 40 1 Number of Fan Speeds 4 4 4 4 4 4 4 Airflow lowest to highest 210 290 360 380 210 300 360 380 210 290 360 380 210 300 360 380 310 450 650 680 520 620 780 870 520 620 780 870 Sound Pressure lowest to highest dB A 27 34 42 27 34 42 27 34 42 27 34 42 33 40 46 39 45 50 39 45 50 Air throw Data Ft 23 23 23 23 30 36 36 Legend SEER Seasonal Energy Efficiency Ratio EER Energy Efficiency Ratio MCA Minimum Circuit Amps MOCP Max Over Current Protection 41 DIMENSIONS INDOOR Fig 2 Indoor units Unit Size W in mm D in mm H in mm Operating Weight Ib kg 9K 12K 32 9 835 7 8 198 11 0 280 19 2 8 7 18K 39 0 990 8 6 218 12 4 315 26 5 12 0 24K 30K 46 7 1186 10 2 258 13 4 343 40 8 18 5 DIMENSIONS OUTDOOR 31 89 810 W 21 97 558 10 39 10 21 61 549 W1 31 30 795 W3 12 56 65 W2 e 8 pi S 8 w Unit inch mm Fig 3 Outdoor Unit Sizes 09 and 12 Op
27. 95 4 29 69F 20 5C Input 0 8 0 81 1 11 1 05 1 0 98 0 96 0 84 TH 10 6 10 3 10 21 10 11 9 23 8 41 7 89 4 11 71 6F 22C Input 0 82 0 83 1 15 1 07 1 02 1 02 0 92 0 86 59F 15C TH 11 8 12 7 12 42 11 32 10 4 9 54 8 9 5 75 Input 0 79 1 01 1 05 1 1 1 02 1 0 98 0 83 64 4F 18C TH 12 1 12 7 12 32 11 34 10 32 9 32 8 81 6 14 12 Input 0 83 1 37 1 4 1 26 1 22 1 27 1 01 0 91 208 230V 69F 20 5C TH 12 3 12 6 12 12 11 32 10 21 9 12 8 43 6 49 Input 0 83 1 1 1 12 1 19 1 19 1 25 1 03 0 98 71 6F 22C TH 11 1 12 4 12 01 11 21 10 01 9 02 8 21 6 01 Input 0 85 1 15 1 16 1 21 1 23 1 31 1 05 1 59F 15C TH 23 2 20 5 19 42 17 56 16 52 14 28 12 08 9 39 Input 1 58 1 49 1 48 1 58 1 46 1 4 1 35 1 21 64 4F 18C TH 22 4 20 1 18 66 16 89 16 05 13 94 12 06 9 16 18 Input 1 62 1 55 1 55 1 61 1 52 1 45 1 4 1 29 208 230V 69F 20 5C TH 21 7 19 7 17 93 16 26 15 62 13 62 12 07 8 95 Input 1 67 1 62 1 63 1 65 1 58 1 5 1 45 1 38 71 6F 22C TH 21 19 17 23 15 56 14 92 12 92 11 37 8 25 Input 1 72 1 67 1 68 1 7 1 63 1 55 1 5 1 43 59F 15C TH 28 6 27 8 25 85 23 56 23 42 23 22 23 16 18 93 Input 2 2 25 2 24 2 21 2 2 2 23 2 24 2 17 TH 27 6 27 6 24 52 23 54 23 4 22 52 20 45 17 45 64 4F 18C 24 Input 2 24 2 45 2 35 2 35 2 32 2 23 2 21 2 16 208 230V TH 29 1 29 3 26 75 24 63 22 98 21 85 19 61 16 38 69F 20 5C Input 2 39 2 74 2 64 2 58 2 42 2 25 2 2 2 18 TH 26 9 27 5 24 21 23 41 22 54 21 67 19 54 16 24 71 6F 22C Input 2 2 25 2 24 2 21 2 2 2 23 2 24 2 17 TH 43 41 2 37 52 34 65 32 32 30 65 28 84 2
28. HAZARD Failure to follow this caution may result in equipment damage or improper operation Never use the system compressor as a vacuum pump Refrigerant tubes and indoor coil should be evacuated using the recommended deep vacuum method of 500 microns Always break a vacuum with dry nitrogen SYSTEM VACUUM AND CHARGE Using Vacuum Pump 1 Completely tighten all flare nuts and connect manifold gage charge hose to a charge port of the low side service valve See Fig 16 2 Connect charge hose to vacuum pump 3 Fully open the low side of manifold gage See Fig 17 4 Start vacuum pump 5 Evacuate using the triple evacuation method 6 After evacuation is complete fully close the low side of manifold gage and stop operation of vacuum pump 7 The factory charge contained in the outdoor unit is good for up to 25 ft 8 m of line length For refrigerant lines longer than 25 ft 8 m add refrigerant as specified in the ADDITIONAL REFRIGERANT CHARGE table in this document 8 Disconnect charge hose from charge connection of the low side service valve 9 Fully open service valves B and A 10 Securely tighten caps of service valves 22 Outdoor Unit Refrigerant Indoor Unit Low Side me D J CB nosie H High Side Service Valve Fig 16 Service Valve Manifold Gage A _ Charge hose 500 microns Low side valve Charge hose P doo A Vacuum pump Low side valve F
29. Indoor Unit Clearance CLEARANCES OUTDOOR Air inlet Fig 7 Outdoor Unit Clearance Minimum Value UNIT in mm A 24 609 B 24 609 C 24 609 D 4 101 E 4 101 ELECTRICAL DATA UNIT OPER VOLTAGE COMPRESSOR OUTDOOR FAN INDOOR FAN MCA MAX FUSE SIZE MAX MIN V PH HZ RLA V PH HZ FLA HP W V PH HZ FLA HP 9K 5 3 IK 127 104 115 1 60 115 1 60 0 14 0 053 40 115 1 60 0 17 0 027 20 15 20 9K 5 3 0 42 0 053 40 0 07 0 027 20 15 12K 5 70 0 42 0 053 40 0 07 0 027 20 15 18K 253 187 208 230 1 60 7 3 208 230 1 60 0 95 0 067 50 208 230 1 60 0 17 0 077 58 15 20 24K 8 8 0 47 0 16 120 0 23 0 080 60 15 25 30K 13 5 1 21 0 16 120 0 23 0 080 60 20 30 Permissible limits of the voltage range at which the unit will operate satisfactorily LEGEND FLA Full Load Amps MCA Minimum Circuit Amps RLA Rated Load Amps WIRING Recommended Connection Method for Power and Communication Wiring To minimize communication wirin interference Power Wiring The main power is supplied to the outdoor unit The field supplied connecting cable from the outdoor unit to indoor unit consists of three 3 wires and provides the power for the indoor unit Two wires are high voltage AC power and one is a ground wire Consult your
30. System problems such as leakage or blocking Troubleshooting shut off the power supply and turn it on 5 seconds later Is it still displaying the error code Yes 15 there cool air blowing out from indoor air outlet 15 there any leakage Especially the connection parts such asthe gas Yes valve and the liquid valve Is there any blocking Such as the capillary or the welded points of the pipes Wes Clear the blocking 39 Check if T2 Check if T2 sensor is well fixed Correct the installation or replace T2 sensor Does the problem remain Yes Replace indoor PCB Repair the leakage and recharge the refrigerant IPM malfunction or IGBT over strong current protection diagnosis and solution PO Error Code PO Malfunction decision conditions When the voltage signal that IPM sends to the compressor drive chip is abnormal the LED display will show PO and the AC will turn off Supposed causes Wiring mistake e malfunction Outdoor fan assembly faulty Compressor malfunction e Outdoor PCB faulty Check if the wiring between main PCB and compressor connected by error and if the wires and connectors are broken Correct the connection or replace the Yes wires and connectors No IPM continuity check Check if the IPM terminal resistance values are uniform Replace the IPM board or repl
31. ace the No main PCB if the IPM board and main PCB are integrated together Yes Check if the outdoor fan runs properly or the outdoor unit ventilation is good please refer to the solution of fan speed is out of control Yes Check if the compressor resistance values are uniform No Replace the compressor Yes Replace the outdoor main PCB if the main PCB and IPM are separate NOTE In figures 41 46 the following is observed U V W references compressor connection point e Preferences input voltage N references output voltage 40 LE NM Nana ann m 2 te i neat ns 9 Mi ww Par 1 MW 1 Tr II GEL 1151 ee 57 r Fig 42 P V 41 ennn an IIT NI Fig 43 P W E best k i 4 Y 4 D ken 5 AO i I Fig 44 N U 42 178 OMG PAR 24 ees TT v w TER r i 3 oa a s a a EE Fos apa sa da cum s t ja j E z T E CX 4 ved Fig 46 N W 43 4 T 5 cs Ta LE EL
32. as decreased more than 41 F 5 C When the evaporator coil temperature has decreased more than 41 F 5 C the defrost mode starts 3 At any value of outdoor ambient temperature T4 If the machine runs with a condenser coil temperature lower than 37 F 3 C for more than 120 minutes and the outdoor coil temperature has been lower than TCDI 39 F for more than 3 minutes the machine enters the defrost mode Where TCDI 7 C 19 4 F Indoor fan running rules Indoor fan speed can be set as high medium low silent mode or auto grade During all the fan speeds the anti cold wind function is preferential If the compressor stops caused by the room temperature rising the indoor fan will run at super breeze When the compressor is running the indoor fan is controlled Outdoor fan running rules In cooling mode the outdoor fan runs according to Fig 31 T4 82 42 2870 78 8 F260 71 6 F22 O M 68 0 H20 L Fig 31 Outdoor fan running rules Condition of defrosting T4 lt 32 F 0 C When the unit is running and the following two items are satisfied the unit starts defrosting The units run with T3 lt 37 4 F 3 C for 40 minutes and T3 keeps lower than TCDI F for more than 3 minutes The units run with T3 lt 37 4 F 3 C for 80 minutes and T3 keeps lower than TCDI 35 6 F 2 C for more than 3 minutes lt 32 F 0 C If the 1st condition and 2nd
33. as follows If the evaporator coil temperature T2 is lower than 32 F 0 C the compressor will stop and restarts once T2 41 F 5 C T2 lt 32 F 0 C the compressor will stop and restart when T2 41 F 5 C 32 0 T2 lt 39 2 F 4 C the compressor frequency will be limited and decreased to the lower level 39 2 4 lt 2 lt 44 6 7 the compressor will keep the current frequency T2 gt 44 6 F 7 C the compressor frequency will not be limited If32 F T2 lt 39 F 0 C x T2 lt 4 the compressor frequency will be limited and decreased to a lower level Now if 39 F 12 lt 45 F 4 C lt 2 lt 7 C the compressor continue running at the current frequency If T2 gt 45 F 7 C the compressor frequency will not be limited and operation is normal SEQUENCE OF OPERATION Interface A wireless remote control supplied with the unit is the interface between the fan coil and the user The wireless remote control has the following characteristics Capable of displaying C and F with F being the default setting To change the default setting refer to the Owner s Manual e The remote control setpoint range is from 62 F 17 C to 86 F 30 C in increments of 1 F 1 C e The wireless remote control has an operating range of 25 ft 7 62 m e The same remote control can be used to control more than one unit e If the remote
34. between 62 86 F 17 30 C In this mode the machine will choose cooling heating or fan only mode according to AT NOTE AT T1 Ts where T1 represents the indoor room temperature and Ts represents the set temperature AT T1 Ts Running mode AT gt 2 F Cooling 1 lt AT lt 2 F Fan only AT lt 2 F Heating Indoor fan will run at an automatic fan speed for each running mode The louver will also operate depending in relevant mode taking place If the machine switches mode between heating and cooling the compressor will stop for 15 minutes and then choose a mode according to AT If a new set temperature is commanded the system will choose a running mode according to AT FORCED OPERATION FUNCTION When the machine is off pressing the manual button will carry the machine to forced auto mode Pressing the button once again within 5 seconds the machine will turn into forced cooling mode In forced auto forced cooling or any other operation mode pressing the manual button will turn off the machine When in this mode all general protections are available Forced cooling mode The compressor runs at F2 frequency and indoor fan runs as breeze After running for 30 minutes the machine will turn to auto mode with a 75 F 24 set temperature Forced auto mode The action of forced auto mode is the same as normal auto mode with a 75 F 24 C set temperature TIMER FUNCTION Timing range is 24 h
35. can be as low as 46 F which keeps the room temperature steady at 46 F and prevents household pipes from freezing when the house is unoccupied for a long time in severe cold weather Silence operation Press the silence button on remote controller to initiate SILENCE function When the Silence function is activated the compressor running frequency will keep lower than F2 and the indoor unit will supply faint breeze which will reduce the noise to the lowest level and create a quiet and comfortable room for you TROUBLESHOOTING This section provides the required flow charts to troubleshoot problems that may arise NOTE Information required in the diagnoses can be found either on the wiring diagrams or in the appendix Required Tools The following tools are needed when diagnosing the units e Digital multimeter e Screw drivers Phillips and straight head e Needle nose pliers Refigeration gauges Recommended Steps 1 Refer to the diagnostic hierarchy charts below and determine the problem at hand 2 Go to the chart listed in the diagnostic hierarchy and follow the steps in the chart for the selected problem For the ease of service the systems are equipped with diagnostic code display LED s on both the indoor and outdoor units The outdoor diagnostic display is on the outdoor unit board and is limited to very few errors The indoor diagnostic display is a combination of flashing LED s on the display panel on the
36. ck to be certain factory tubing on both indoor and outdoor unit has not shifted during shipment Ensure tubes are not rubbing against each other or any sheet metal Pay close attention to feeder tubes making sure wire ties on feeder tubes are secure and tight 23 CONTROL SYSTEM The unit is equipped with a microprocessor control to perform two functions 1 Provide safety for the system 2 Control the system and provide optimum levels of comfort and efficiency The main microprocessor is located on the control board of outdoor unit Outdoor and indoor units have thermistors used to monitor the system operation to maintain the unit within acceptable parameters and control the operating mode Indoor fan speed Maximum frequency No limit High speed turbo function Silent mode Fixed If users switch on AC by remote controller the compressor will run at the Fmax frequency for 7 minutes according to the outdoor ambient temp During the 7 minutes the frequency limitation is active 7 minutes later the compressor running frequency will be controlled as shown below While the zones of A B C are corresponding to different compressor running frequency T1 Ts 38 3 F 3 5 C wee 37 4 F 3 0 C 36 5 F 2 5 C 35 6 F 2 0 C 34 7 F 1 59C 33 8 F 1 0C 32 9 F 0 5 C 31 1 F 5 C 30 2 F 1 09C Y H Fig 20 Zones NOTE When AC is in hold zone for 3 minutes the compressor
37. control is lost damaged or the batteries are exhausted the system can be operated by using the manual button forced Auto located under the front panel Manual Button AUTO COOL Fig 26 Manual Button Location on Unit MODES OF OPERATION COOLING MODE In this mode the system cools and dries the room air with the fan running continuously either at a selected fan speed or Auto fan speed The fan runs even when the compressor cycles off This feature enhances room comfort and efficiency of the system 25 Compressor Operation in Cooling Mode In cooling mode the maximum operation frequency Fmax of the compressor after it starts running depends on the outdoor ambient temperature T4 Once the system starts running the compressor will run at the Fmax frequency for 7 minutes at a specific T4 During this time the frequency limitation is active therefore the compressor will continue running even if the set point condition is satisfied The compressor running frequency will then be controlled based on the difference between the room temperature and the temperature set point T1 Ts Outdoor Fan Operation in Cooling Mode When in cooling mode the outdoor fan motor cycles based on the outdoor ambient temperature as shown below T4 F High 72 68 Low Fig 27 Outdoor Fan Motor Cycles Indoor Fan Operation in Cooling Mode When in cooling mode the indoor fan runs continuously either at the chosen set sp
38. ction is initiated But when the indoor PCB receives signal which sent from remote controller every 3 minutes the buzzer will not respond When the unit is running with follow me function the PCB will control the unit according to the temperature from follow me signal and the temperature collection function of room temperature sensor will be shielded but the error detective function of room temperature sensor will be still valid 2 When the follow me function is available the PCB will control the unit according to the room temperature from the remote controller and the setting temperature 3 The PCB will take action to the mode change information from remote controller signal but it will not affected by the setting temperature 4 When the unit is running with follow me function if the PCB does not receive any signal from remote controller for 7 minutes or pressing FOLLOW ME button again the follow me function will be turned off automatically and the temperature will control the unit according to the room temperature detected from its own room temperature sensor and setting temperature Self Clean For heat pump models which are provided with this function after running in cooling or drying mode if the user press Self Clean button on remote controller indoor unit runs in fan only mode for 13 minutes then low heat operation and finally in fan only again This function can keep the inside of indoor unit dry and prevent breed
39. d board damage 29 INDOOR UNIT DIAGNOSTIC GUIDES Operation lamp Timer lamp Display LED STATUS 1 time X EO Indoor unit EEPROM parameter error 2 times X E1 Indoor outdoor units communication error 3 times X E2 Zero crossing signal detection error 4 times X E3 Indoor fan speed has been out of control 5 times X E4 Indoor room temperature sensor T1 open circuit or short circuit 6 times X E5 Evaporator coil temperature sensor T2 open circuit or short circuit 7 times X EC Refrigerant leakage detection 2 times O F1 Outdoor ambient temperature sensor T4 open circuit or short circuit 3 times O F2 Condenser coil temperature sensor T3 open circuit or short circuit 4 times O F3 Compressor discharge temperature sensor T5 open circuit or short circuit 5 times O F4 Outdoor unit EEPROM parameter error 6 times O F5 Outdoor fan speed has been out of control 1 times malfunction or IGBT over strong current protection 2 times P1 Over voltage or over low voltage protection 3 times p protection of compressor top diagnosis and solution only for 5 times P4 Inverter compressor drive error O light DIAGNOSIS AND SOLUTION X off flash EEPROM parameter error diagnosis and solution E0 F4 Error Code 4 Malfunction decision conditions Indoor or outdoor PCB main chip does not receive feedback from EEPROM chip
40. dback signal connector If the value is not 5V change the PCB Otherwise proceed to step 3 3 Rotate the fan by hand measure the voltage of pin 1 5 pin 2 5 and pin 3 5 in the feedback signal connector If any voltage is not positive voltage fluctuation the fan motor has an issue and must be replaced 36 Open circuit or short circuit of temperature sensor diagnosis and solution 5 Ce Malfunction decision conditions If the sampling voltage is lower than 0 06V or higher than 4 94V the LED will display the failure Supposed Causes Wiring mistake Sensor faulty Troubleshooting Check the connections between the temp sensor and the main PCB Are the connections good Correct the connections Yes Check the resistance value of the sensor via appendix 1 Yes Replace the indoor or outdoor main PCB Is it normal No Replace the sensor and check if the problem happens again 37 Refrigerant Leakage Detection Diagnosis and Solution EC Error Code EC Malfunction decision conditions Define the evaporator coil temp T2 of the compressor just starts running as Tcool In the beginning 5 minutes after the compressor starts up if T2 lt Tcool 35 6 F Tcool 2 C does not keep continuous 4 seconds and this situation happens 3 times the display area will show EC and AC will turn off Supposed caused e 2 sensor faulty e Indoor PCB faulty
41. e MCA minimum circuit amps and MOCP maximum over current protection to correctly size the wires and the disconnect fuse or breakers respectively Per caution note only copper conductors with a minimum 300 volt rating and 2 64 inch thick insulation must be used X CAUTION EQUIPMENT DAMAGE HAZARD Failure to follow this caution may result in equipment damage or improper operation Wires should be sized based on NEC and local codes Use copper conductors only with a minimum 300 volt rating and 2 64 inch thick insulation CAUTION EQUIPMENT DAMAGE HAZARD Failure to follow this caution may result in equipment damage or improper operation Be sure to comply with local codes while running wire from indoor unit to outdoor unit Every wire must be connected firmly Loose wiring may cause terminal to overheat or result in unit malfunction A fire hazard may also exist Therefore be sure all wiring is tightly connected No wire should be allowed to touch refrigerant tubing compressor or any moving parts Disconnecting means must be provided and shall be located within sight and readily accessible from the air conditioner Connecting cable with conduit shall be routed through hole in the conduit panel 10 CONNECTION DIAGRAMS CONNECTING CABLE FELD POWER SUPPLY OUTDOOR TO INDOOR CAL aN S LIN Power 0 Signal High Votage 115 1 80 Indoor Unit Power Sup
42. e the the IPM terminal resistance MNo main PCB if the IPM board and main values are uniform PCB are integrated together Yes Check if the outdoor fan runs properly or the outdoor unit ventilation is good Refer to the solution of fan speed is out of control Yes Check if the compressor res istance values are uniform No Replace the compres sor Yes Replace the outdoor main PCB if main PCB and IPM are separate 47 Main parks check 1 Temperature sensor checking Disconnect the temperature sensor from PCB measure the resistance value with a tester Tester Fig 48 Tester Temperature sensors Room temp sensor Indoor coil temp 2 sensor Outdoor coil temp 3 sensor Outdoor ambient temp T4 sensor Compressor discharge temp e 5 sensor Measure the resistance value of each winding by using the multi meter 48 Compressor checking Measure the resistance value of each winding by using the tester Input Terminal Blue 4 Red 9 Black 3 Red Blue Fig 49 Tester Black Terminal Resistance Value Terminal one Terminal two Terminal three m 0 80 1 770 0 550 ue Blac 68 F 20 C 68 F 20 C 68 F 20 C Red Blue Fig 50 Compressor checking 49 IPM continuity check Turn off the power let the large capacity electrolytic capacitors discharge c
43. eed high medium or low or in Auto mode where the speed is determined by the microprocessor based on the difference between the room temperature and the temperature set point as shown below Tets TN High Medium J Low Fig 28 Indoor Fan Operation HEATING MODE In this mode the system heats the room air with the indoor fan running at either the selected speed or on Auto As in the cooling mode the indoor fan will run continuously unless interrupted by the cold blow algorithm This algorithm will not allow the fan to run if the indoor coil temperature drops below a preset value 1 5 Defrost is controlled by the on board microprocessor Compressor Operation in Heating Mode In heating mode the maximum operation frequency Fmax of the compressor after it starts running depends on the outdoor ambient temperature T4 Once the system starts running the compressor will run at the Fmax frequency for 7 minutes at a specific outdoor ambient temperature T4 During this time the frequency limitation is active therefore the compressor will continue running even if the set point condition is satisfied The compressor running frequency will then be controlled based on the difference between the room temperature the temperature set point and a temperature difference that takes a default value of 32 F T1 Ts AT Outdoor Fan Operation in Heating Mode When in heating mode the outdoor fan moto
44. erating Model W in mm D1 in mm H in mm W1 in mm D1 in mm Weight Ib kg 9K 12K 32 0 810 12 2 310 22 0 558 20 9 530 11 4 290 82 5 37 4 18K 33 2 845 13 2 335 27 6 700 22 1 560 13 2 335 102 5 46 5 24K 37 2 945 15 9 405 31 9 810 25 2 640 15 9 405 137 6 62 4 30K 37 2 945 15 9 405 31 9 810 25 2 640 15 9 405 157 6 71 5 DIMENSIONS OUTDOOR CONTINUED 7 90 200 7 TRA UTF r re D1 13 19 335 22 05 560 W1 D2 14 17 360 33 27 845 W D 12 60 320 Unit inch mm 0 87 22 _R0 20 5 Fig 4 Outdoor Units Size 18 DIMENSIONS OUTDOOR CONTINUED i 1 1 i L lt 1 uU D1 178 L1 HT nd 4 T 11 gu 1 4 4 A AMT 111 2111 11 i 1 k i k a LT Gia WI 25 20 6483 D1 15 94 4053 D2 17 68 4493 3 35 85 W2 2 28 58 H1 1 4 57 116 2 Unit inch mm 49 Fig 5 Outdoor Units Size 24 and 30 CLEARANCES INDOOR CEILING 6 0 15m min Fig 6
45. front of the unit If possible always check the diagnostic codes displayed on the indoor unit first The diagnostic codes for the indoor and outdoor units are listed in the appendix Problems may occur that are not covered by a diagnostic code but are covered by the diagnostic flow charts These problems will be typical air conditioning mechanical or electrical issues that can be corrected using standard air conditioning repair techniques For problems requiring measurements at the control boards note the following 1 Always disconnect the main power 2 When possible check the outdoor board first 3 Start by removing the outdoor unit top cover 4 Reconnect the main power 5 Probe the outdoor board inputs and outputs with a digital multi meter referring to the wiring diagrams 6 Connect the red probe to hot signal and the black probe to the ground or negative 7 Note that some of the DC voltage signals are pulsating voltages for signal this pulse should be rapidly moving at all times when there is a signal present 8 If it is necessary to check the indoor unit board you must start by disconnecting the main power 9 Next remove the front cover of the unit and then control box cover 10 Carefully remove the indoor board from the control box place it face up on a plastic surface not metal 11 Reconnect the main power and repeat steps 5 6 and 7 12 Disconnect main power before reinstalling board to avoid shock hazard an
46. harge pipe and suction pipe with a torch 3 Remove the hex nuts Ret Discharge and washers fixing the 1 5 pipe and compressor on bottom ad suction plate i L 16 db pipe 4 Liftthe compressor from the base pan assembly Nuts of compress 60 APPENDIX 1 Temperature Sensor Resistance Value Table for T1 T2 T3 T4 C K C F K Ohm C T K Ohm C F K Ohm C F K Ohm 20 4 115 266 20 68 12 6431 60 140 2 35774 100 212 0 62973 19 2 108 146 21 70 12 0561 61 142 2 27249 101 214 0 61148 18 0 101 517 22 72 11 5 62 144 2 19073 102 216 0 59386 17 1 96 3423 23 73 10 9731 63 145 2 11241 103 217 0 57683 16 3 89 5865 24 75 10 4736 64 147 2 03732 104 219 0 56038 15 5 84 219 25 77 10 65 149 1 96532 105 221 0 54448 14 7 79 311 26 79 9 55074 66 151 1 89627 106 223 0 52912 13 9 74 536 27 81 9 12445 67 153 1 83003 107 225 0 51426 12 10 70 1698 28 82 8 71983 68 154 1 76647 108 226 0 49989 11 12 66 0898 29 84 8 33566 69 156 1 70547 109 228 0 486 10 14 62 2756 30 86 7 97078 70 158 1 64691 110 230 0 47256 9 16 58 7079 31 88 7 62411 71 160 1 59068 111 232 0 45957 8 18 56 3694 32 90 7 29464 72 162 1 53668 112 234 0 44699 7 19 52 2438 33 91 6 98142 73 163 1 48481 113 235 0 43482 6 21 49 3161 34 93 6 68355 74 165 1 43498 114 237 0 42304 5 23 46 5725 35 95 6 40021 7
47. ig 17 Manifold Deep Vacuum Method The deep vacuum method requires a vacuum pump capable of pulling a vacuum of 500 microns and a vacuum gage capable of accurately measuring this vacuum depth The deep vacuum method is the most positive way of assuring a system is free of air and liquid water See Fig 18 5000 a9 AO LEAK IN 2 1l 5 3000 gt 2000 VACUUM TIGHT 1000 TOO WET TIGHT 900 DRY SYSTEM 0 1 2 3 4 5 6 7 MINUTES Fig 18 Deep Vacuum Graph Triple Evacuation Method The triple evacuation method should be used Refer to Fig 19 and proceed as follows 1 Pump system down to 500 MICRONS of mercury and allow pump to continue operating for an additional 15 minutes 2 Close service valves and shut off vacuum pump 3 Connect a nitrogen cylinder and regulator to system and open until system pressure is 2 psig 4 Close service valve and allow system to stand for 10 minutes During this time dry nitrogen will be able to diffuse throughout the system absorbing moisture 5 Repeat this procedure as indicated in Fig 19 System will then be free of any contaminants and water vapor EVACUATE BREAK VACUUM WITH DRY NITROGEN WAIT BREAK VACUUM WITH DRY NITROGEN lt 434 EVACUATE CHECK FOR TIGHT DRY SYSTEM IF IT HOLDS DEEP VACUUM RELEASE CHARGE INTO SYSTEM Fig 19 Triple Evacuation Method Final Tubing Check IMPORTANT Che
48. ing of mold Refrigerant Leakage Detection With this new technology the display area will show EC when the outdoor unit detects refrigerant leakage This feature is only available in the cooling mode for 1 to 1 systems T2 indoor coil temp Tcool sample temp of T2 when the compressor starts During the first 5 minutes after compressor s start if the situation that T2 lt Tcool 3 6 F does not last for 4 seconds continuously the system will record suspected refrigerant leakage once and the compressor will stop If the above case happened three times continuously the system will judge refrigerant leakage Indoor unit will indicate error code EC and unit will turn off automatically Refrigerant leakage count will reset under following situation During the first 5 minutes after compressor s start the situation that T2 lt Tcool 3 6 lasts for 4 seconds continuously Evaporator anti freeze protection in cooling mode Non cooling mode Louver Position Memory Function When starting the unit again after shutting down its louver will restore to the angle originally set by the user but the precondition is that the angle must be within the allowable range if it exceeds it will memorize the maximum angle of the louver During operation if the power fails the louver will restore to the default angle 46 F 8 C Heating heating setback In heating operation the preset temperature of the air conditioner
49. interval is abnormal Supposed Connection mistake Causes faulty Troubleshooting Check if the connections and Correct the connections Turn on the power supply is normal unit when the power supply is good Yes Indoor main PCB is defective Replace indoor main PCB 33 Fan speed has been out of control diagnosis and solution E3 Error Code E3 When the indoor fan speed is too slow 300 RPM for a certain time the unit will stop and the LED Malfunction decision conditions will display the failure e Wiring mistake e Fan assembly fault Supposed Causes 4 d Fan motor faulty PCB faulty Troubleshooting Shut off the power supply and tum it on 5 seconds later s it still displaying the error code he unit operates normally Yes Find out the cause and have it solved For example check whether the fan 15 blocked or the beanng 5 broken Shut off the power supply rotate the fan by hand Does itrotate freely Yes Check the wires of fan motor Are all the connections good Correct the connections Yes If the Check whether the fan malfunction is motor is normal through Replace the stil existing index 1 motor replace the man PCB Replace the Check whether the main PCB is normal through ndex 2 malfunction is solved 34 Index 1 Indoor or outdoor DC fan
50. local building codes and the NEC National Electrical Code or CEC Canadian Electrical Code for special requirements All wires must be sized per NEC or CEC and local codes Use Electrical Data table MCA minimum circuit amps and MOCP maximum over current protection to correctly size the wires and the disconnect fuse or breakers respectively Per caution note only copper conductors with a minimum 300 volt rating and 2 64 inch thick insulation must be used Communication Wiring A separate shielded copper conductor only with a minimum 300 volt rating and 2 64 inch thick insulation must be used as the communication wire from the outdoor unit to the indoor unit To minimize voltage drop of the control wire the factory recommendation is 14 3 wire with a ground In special instances where there is high electrical interferences use a separate 16ga shielded wire to ensure proper communication The main power is supplied to the outdoor unit The field supplied connecting cable from the outdoor unit to indoor unit consists of four 4 wires and provides the power and communication signals for the indoor unit Two conductors are for power wiring L1 L2 or L N one is a ground wire and one is a DC communication wire Consult your local building codes and the NEC National Electrical Code or CEC Canadian Electrical Code for special requirements All power wires must be sized per NEC or CEC and local codes Use Electrical Data tabl
51. ly problems System leakage or block PCB faulty Troubleshooting Ensure indoor and outdoor units are clear Check if the air flow system of indoor and of debris outdoor units are obstructed No Turn off the power supply and turn iton5 Check if allthe connections especially the OLP Correct the connection Over Load connection Protector sensor is good Check if the unit start normally Checkifthe Measure the refrigerant resistance between Replace charge volume is the two ports of the OLP normal the OLP Is it zero Recharge the correct refrigerant volume Refrigerant system is blocked such as capillary or welded point of pipes 46 Inverter compressor drive error diagnosis and solution P4 Error Code P4 Malfunction decision conditions An abnormal inverter compressor drive is detected by a special detection circuit including communication signal detection voltage detection compressor rotation speed signal detection and so on Supposed causes Wiring mistake e malfunction e Outdoor fan assembly fault Compressor malfunction e Outdoor PCB faulty Check if the wiring between main PCB and compressor connected by error and if the wires and connectors are broken Correct the connection or replace the wires and connectors No IPM continuity check Check if Replace the IPM board or replac
52. nic control board 4 Remove the four fixing screws of the fan motor 5 Then remove the fan lt Four motor screws Electrical How to remove the parts electrical parts 1 After finish work of rembve 4 gt Reactor connector the three connectors for the compressor and 6 electrical heaters Y 7 Compressor connector and 2 Release the LK 4 electrical heater connector of the reactor E connector Two blue wires of four way valve 58 3 Pull out the two blue wires connected with the four way valve 4 Pull out connectors of the compressor top temp sensor condenser coil temp sensor T3 outdoor ambient temp sensor T4 and discharge temp sensor T5 5 Remove the ground wires 6 Remove the power supply wires L1 L2 S 7 Then remove the electronic control box 59 4 5 Four way valve Compressor How to remove the four way valve The picture of four way valve may be different from 1 Perform work of item the on your side 123 2 Recover refrigerant y Four way from the refrigerant circuit valve 3 Remove the screw of the coil and then remove the coil parts 4 Detach the welded parts of four way valve and pipe 5 Then the four way valve ass y can be removed Welded How to remove the compressor 1 After performing work of item 1 2 3 2 Remove the disc
53. nput 0 39 0 75 1 06 0 89 0 85 0 82 TC 9 01 12 15 12 43 9 89 9 07 8 15 89 6F 32C 73 4F 23C SC 7 7 8 53 8 84 8 06 6 85 6 25 Input 0 4 0 97 1 3 1 34 0 92 0 85 TC 7 41 7 82 9 73 8 34 6 12 5 1 69 8F 21C 59F 15C SC 6 64 6 69 8 18 7 37 4 36 3 74 Input 0 35 0 54 0 81 0 8 0 75 0 75 TC 7 76 9 16 9 89 8 62 6 92 5 83 75 2F 24C 62 6F 17C SC 3 58 8 11 6 27 5 52 4 65 4 29 09 Input 0 35 0 54 0 81 0 8 0 75 0 75 208 230V TC 8 21 9 22 10 41 9 27 7 32 6 80 6F 27C 66 2F 19C SC 7 39 5 88 8 22 7 79 5 11 4 37 Input 0 35 0 75 0 82 0 81 0 75 0 75 TC 8 41 9 72 11 59 10 22 8 82 7 51 89 6F 32C 73 4F 23C SC 3 68 5 76 6 9 6 2 5 55 5 Input 0 36 0 56 0 83 0 82 0 76 0 77 TC 8 21 11 75 11 42 9 7 85 6 68 69 8F 21C 59F 15C SC 7 06 9 05 8 68 7 38 6 42 5 58 Input 0 38 0 8 1 04 0 87 0 82 0 81 TC 8 42 11 84 12 01 9 35 8 32 7 34 75 2F 24C 62 6F 17C SC 7 28 8 69 8 66 7 62 6 53 5 81 12 Input 0 57 0 94 1 25 1 27 0 98 0 94 208 230V TC 8 81 11 95 12 23 9 69 8 87 1 95 80 6F 27C 66 2F 19C SC 7 49 8 32 8 63 7 85 6 64 6 04 Input 0 39 0 75 1 06 0 89 0 85 0 82 TC 9 01 12 15 12 43 9 89 9 07 8 15 89 6F 32C 73 4F 23C SC 7 7 8 53 8 84 8 06 6 85 6 25 Input 0 4 0 97 1 3 1 34 0 92 0 85 TC 12 58 15 24 16 25 11 04 8 32 6 78 69 8F 21C 59F 15C SC 8 34 10 3 10 6 7 93 6 18 5 16 Input 0 58 0 93 1 53 1 2 1 42 1 32 TC 13 48 16 41 16 66 12 3 9 43 7 74 75 2 24 62 6F 17C SC 8 85 10 94 11 35 8 62 6 87 5 91 18 Input 0 57 0 93 1 56 1 22 1 45 1 35 208 230 14 43 18 04 18 37 13 35
54. oea U ejdsiq VOLNO AGO Josues edid 6N2 uinurxeu eoeyoejul Josues WOOH AZLO veemjeg Jeddejs GND JOOPUI PNO jndjno INI AGO GLNO Ave OC N eu eAnejes 9LNO eBeyoA LLNO NI 7 AN TVA LNdLNO 10 LNdNI IO LLNOO LINN AGO seui veomjeg ejdsiq VOLNO Josues 6NO uinurxeu eoeyoejul Josues AZLOQ veemjeg GND JOOPUI AGO GLNO Ave OC N eu 9LNO LLNO NI 1 AN TVA 104100 20 LNdNI 0 2 802 9715 SUMIM ET WNOLLdO mo M 9 HOOONI 4 04 S jun 2 mE
55. ompletely and dismount the IPM Use a digital tester to measure the resistance between P and UVWN UVW and N Digital tester Digital tester Red Black Red Black N U U V P V Several MO W N Several MO W Red Indoor AC Fan Motor Measure the resistance value of each winding by using the tester d add E M Te m 5 co T x n D W N a 25 Fig 51 Indoor AC Fan Motor Resistance Value 100 50 8 1000 8 20 C 68 F Brand Weiling 20 C 68 F Brand Dayang Terminal Black Red White Black 64 50 8 68 50 8 20 C 68 F Brand Dayang 20 C 68 F Brand Weiling 50 DISASSEMBLY INSTRUCTIONS NOTE This part is for reference only and the photos may differ from your unit Indoor unit No Parts Procedures Remarks ____ How to remove the front Overview Front panel 1 Pull the bottom side of the panel and release the clips Then remove the front panel 2 Remove the filter and horizontal louver 3 Remove the four fixing screws 4 Remove the cover one screw 5 Lift the panel frame and release the connector of display assembly connectors Then remove the panel frame assembly One screw fixing the co Filter nn Four screws Connector for display ass
56. ontal Air Sweep Air Direction Control Auto Restart Function Cold Blow Protection On Heat Pumps Freeze Protection Mode On Heat Pumps Turbo Mode Silence Mode Auto Changeover On Heat Pumps Follow Me 0000000 gt Energy Saving Features Sleep Mode Stop Start Timer 46 F Heating Mode Heating Setback Safety And Reliability 3 Minute Time Delay For Compressor Over Current Protection For Compressor Indoor Coil Freeze Protection Indoor Coil High Temp Protection in Heating Mode Condenser High Temp Protection in Cooling Mode CD Ease Of Service And Maintenance Cleanable Filters Diagnostics Liquid Line Pressure Taps Application Flexibility Condensate Pumps Crankcase Heater Legend S Standard A Accessory INDOOR UNITS Fig 1 Condensate Pump Accessory On high wall fan coils the condensate pump has a lift capability of 12 ft 3 6 m on the discharge side with the pump mounted in the fan coil or 6 ft 1 8 m on the suction side if the pump is remote mounted The pump is recommended when adequate drain line pitch cannot be provided or when the condensate must move up to exit NOTE An external 115v power source will be required to run the pump on unit sizes 9k and 12k OUTDOOR UNITS Crankcase Heater Standard on all unit sizes Heater clamps around compressor oil
57. operation amp WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death Before installing modifying or servicing system main electrical disconnect switch must be in the OFF position There may be more than 1 disconnect switch Lock out and tag switch with a suitable warning label 4 WARNING EXPLOSION HAZARD Failure to follow this warning could result in death serious personal injury and or property damage Never use air or gases containing oxygen for leak testing or operating refrigerant compressors Pressurized mixtures of air or gases containing oxygen can lead to an explosion EQUIPMENT DAMAGE HAZARD Failure to follow this caution may result in equipment damage or improper operation Do not bury more than 36 in 914 mm of refrigerant pipe in the ground If any section of pipe is buried there must be a 6 in 152 mm vertical rise to the valve connections on the outdoor units If more than the recommended length is buried refrigerant may migrate to the cooler buried section during extended periods of system shutdown This causes refrigerant slugging and could possibly damage the compressor at start up INTRODUCTION This Service Manual provides the necessary information to service repair and maintain the 38 40 family of Puron air conditioners and heat pumps Section 2 of this manual has an appendix with data required to perform tr
58. oubleshooting Use the Table of Contents to locate a desired topic MODEL SERIAL NUMBER NOMENCLATURES Size Voltage Outdoor Model Indoor Model 9 115 60 38MAQB09 1 9 1 12 12 1 40 12 1 9 38MAQB09 3 40 9 3 12 38MAQB 12 3 40 12 3 18 208 230 1 60 18 3 40 18 3 24 38MAQB24 3 40MAQB24B 3 30 38MAQB30 3 40 3 40 INDOOR UNIT 38 OUTDOOR UNIT 1 115 60 3 208 230 1 60Hz ie MODEL NOT USED UNIT TYPE SYSTEM TYPE B HIGH WALL Q HEAT PUMP OUTDOOR NOMINAL CAPACITY 09 3 4TON 12 1TON MAXIMUM NUMBER OF FAN COIL UNITS THAT 18 1 1 2TONS CAN BE CONNECTED TO THE OUTDOOR UNIT 24 2TONS B 1 1 30 2 1 2TONS 01 15 10001 Week of Manufacture Sequential Serial Number Year of Manufacture V ALL MODELS wat ER anne CERTIFIED C www ahridirectory org Use of the AHRI Certified TM Mark indicates a US manufacturer s Lis EO participation in the program For verification of certification for individual products go to www ahridirectory org STANDARD FEATURES AND ACCESSORIES Ease Of Installation Mounting Brackets gt Low Voltage Controls Comfort Features Microprocessor Controls Wired Remote Control Wireless Remote Control Automatic Horiz
59. ours The timer function will not change the system s current operation mode The setting time is relative time Timer on The machine will turn on automatically when reaching the set time Timer off The machine will turn off automatically when reaching the setting time Timer on off The machine will turn on automatically when reaching the set on time and then turn off automatically when reaching the set off time The timer function will not change the AC current operation mode Suppose AC is off now it will not start up first after setting the timer off function And when reaching the setting time the timer LED will turn off and the AC running mode will not change SLEEP MODE FUNCTION Operation time in sleep mode is 7 hours After 7 hours the system turns off Operation process in sleep mode is as follow SLEEP MODE COOLING When in cooling mode the set temperature rises 1 8 F 1 C up to a maximum 86 F 30 C every one hour Two hours later the set temperature stops rising and indoor fan is fixed at low speed Set point Time hour Fig 34 Sleep Mode Heating When in heating mode the set temperature decreases 1 8 F 1 C down to a minimum 62 F 17 C every one hour Two hours later the set temperature stops rising and indoor fan is fixed at low speed NOTE Anti cold wind function has the priority Set point Time hour Timer setting is available When the use
60. pi 1 Fig 8 115V CONNECTING CABLE 1 OUTDOOR TO INDOOR mw m 1712 5 01 Ll 1215 mS Power to Main Indoor Unit door Indoor Unit Power Supply Power Supply High 208 230 1 60 Voltage 208 230 1 60 208 230 1 60 Voltage Notes 1 Do not use thermostat wire for any connection between indoor and outdoor units 2 All connections between indoor and outdoor units must be as shown The connections are sensitive to polarity and will result in a fault code Fig 9 208 230V oanoge o esindg MAN yH 3ndino d N 3ndino 9 GNO 8NO uBiu y jo uono uuoo ZNO yee ONO OWA SL I ndul SNO OYA GL L3ndu 10 OWA SL 82 92 OWA VENO ZENO 9VAGL Landing EENI LENI U IH ASL L 0 GUId Lutdndino 6LNO 18 1 0 84144 9LNO L O ZUld Uld nduy GINI 21 0 AZL 92GUId INdINO LNO 1 3802 q IVOG IO LLNOO ASOG 599
61. r 2 Remove the screw fixing the motor and then pull out the motor Three screws One screw 54 OUTDOOR UNIT No Procedures Remarks S 1 Panel plate How to remove the panel Screws of top panel plate 27 1 Stop operation of the Cu air conditioner and turn 1 gt gt OFF the breaker 22 2 Refer to the photos on 2 Scre of front al 2 the right to locate screws a on the panels Screws of the right side panel Screw of top panel 3 Remove the screws of 5 Screws of top panel and remove the Screws of big handle top panel front panel on right L side plate A IX Screws of water connector on right side Screw of right side plate plate 55 4 Remove the screws of the front panel including the fixing screws of motor holder and then remove the front panel 5 Remove the screws of the right side plate and remove the right side plate Screw of top panel Screw of the top panel 2 Fan 55 How to remove the fan Fan ass y assembly 1 After removing the panel plate following procedure 1 remove the hex nut fixing the fan and then remove the fan 2 Unfixthe hooks and 7 i then open the electronic control box cover 57 Electronic control box Reactor Compressor and liquid gas separator Nut fixing the fan Fan motor connector 3 Disconnect the connector for fan motor from the electro
62. r cycles based on the outdoor ambient temperature as shown below T4 F Low 63 59 High Fig 29 Indoor Fan Motor Cycles Indoor Fan Operation in Heating Mode In heating mode the indoor fan runs depending on the evaporator coil temperature T2 If the set point conditions are satisfied and the compressor stops the indoor fan will be forced to run for two minutes with breeze During this period the anti cold wind is disabled If the machine is running at the rated capacity test mode the indoor fan will run at the rated speed and the anti cold wind function is disabled Auto Mode in Heating Mode In heating mode when the fan speed is set to Auto the fan will run at a speed determined by the microprocessor based on the difference between the room temperature and the temperature set point as shown below Tae Low 225 2 Medium 1 5 High Fig 30 Auto Mode 26 Defrost Defrost on heat pump units is controlled by the microprocessor and is initiated if either of the following conditions occur 1 If the outdoor temperature T4 gt 32 F 0 The outdoor coil temperature 3 has been lower than 37 F 3 C for about 40 minutes During that time the coil temperature is lower than TCDI for more than 3 minutes 2 If the outdoor temperature T4 32 F 0 C If the conditions described above are met the program judges if the evaporator coil temperature T2 h
63. r uses timer off function in sleep mode or sleep function in timer off mode if the timing is less than 7 hours sleep function will be cancelled when reaching the setting time If the timing is more than 7 hours the machine will not stop until it reaches the set time in sleep mode AUTO RESTART FUNCTION The indoor unit is equipped with auto restart function which is carried out through an auto restart module In case of a sudden power failure the module memorizes the setting conditions present previous to the power failure The unit will automatically resume to the previous operation settings not including swing function 3 minutes after the power returns If the memorization condition is forced cooling mode the unit will run in cooling mode for 30 minutes and turn to auto mode at a 75 F 24 C set temp If unit is off before power off and unit is required to start up now the compressor will have 1 minute delay when power on Other conditions the compressor will have 3 minutes delay when restarts If the equipment was off before the power went off and it is required to start up after this power failure the compressor will have a 1 minute delay when powering on In other conditions the compressor will have a 3 minutes delay at re start 28 Follow me 1 If the indoor PCB receives the signal which results from pressing the FOLLOW ME button on remote controller the buzzer will emit a sound and this indicates the follow me fun
64. rained qualified installers and service mechanics should install start up and service this equipment Untrained personnel can perform basic maintenance functions such as cleaning coils All other operations should be performed by trained service personnel When working on the equipment observe precautions in the literature and on tags stickers and labels attached to the equipment Follow all safety codes Wear safety glasses and work gloves Keep quenching cloth and fire extinguisher nearby when brazing Use care in handling rigging and setting bulky equipment Read this manual thoroughly and follow all warnings or cautions included in literature and attached to the unit Consult local building codes and National Electrical Code NEC for special requirements Recognize safety information This is the safety alert symbol A When you see this symbol on the unit and in instructions or manuals be alert to the potential for personal injury Understand these signal words DANGER WARNING and CAUTION These words are used with the safety alert symbol DANGER identifies the most serious hazards which will result in severe personal injury or death WARNING signifies hazards which could result in personal injury or death CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage NOTE is used to highlight suggestions which will result in enhanced installation reliability or
65. rant line length between the indoor and outdoor units is 10 ft 3 m 3 Refrigerant lines should not be buried in the ground If it is necessary to bury the lines not more than 36 in 914 mm should be buried Provide a minimum 6 in 152 mm vertical rise to the service valves to prevent refrigerant migration 4 Both lines must be insulated Use a minimum of 1 2 in 12 7 mm thick insulation Closed cell insulation is recommended in all long line applications 5 Special consideration should be given to isolating interconnecting tubing from the building structure Isolate the tubing so that vibration or noise is not transmitted into the structure 21 IMPORTANT Both refrigerant lines must be insulated separately following maximum lengths are allowed REFIGERANT LINE LENGHTS ft m Svst 9K 12K 9K 12K 18K 24K 30K lad SS 115V 115V 208 230 V 208 230 V 208 230 V 208 230 V 208 230 V Min Piping Length ft m 10 3 10 3 10 3 10 3 10 3 10 3 10 3 Standard Piping Length ft m 25 7 5 25 7 5 25 7 5 25 7 5 25 7 5 25 7 5 25 7 5 Max outdoor indoor height difference ft m 32 10 32 10 32 10 32 10 65 20 65 20 82 25 Max Piping Length with no additional refrigerant ft m 26 8 26 8 26 8 26 8 26 8 26 8 26 8 charge Max Piping Length ft m 82 25 82 25 82 25 82 25 98 30 98 30 164 50 Additional
66. tage Is the wiring to the indoor main PCB connected correctly No Yes Verify the wires are correct from L1 L2 S between indoor and outdoor units No Replace the indoor main PCB Power on Is the error extinguished Replace outdoor PCB Turn on power Is problem fixed Replace the outdoor main PCB Replace indoor main PCP 31 Fig 35 DC voltage test Fig 36 Reactor resistance test Remark Use a multimeter to test the DC voltage between the L2 port and S ports of the outdoor unit Fig 35 The red pin of multimeter connects with the L2 port while the black pin is for the S port When the AC is running normally the voltage will move alternatively between 50 to SOV If the outdoor unit has a malfunction the voltage will move alternatively with a positive value If the indoor unit has a malfunction the voltage will be a certain value Example 10 13VDC small fluctuating amounts indicates indoor unit malfunction Remark Use a multimeter to test the resistance of the reactor which does not connect with the capacitor Fig 36 The normal values should be around zero ohm Otherwise the reactor must has a malfunction and must be replaced 32 Zero crossing detection error diagnosis and solution E2 Error Code E2 Malfunction When PCB does not receive zero crossing decision con signal feedback for 4 minutes or the zero ditions crossing signal
67. te Air Throw ft m range 9K 12K 23 7 11 3 5 23 7 18K 30 9 13 4 30 9 24K 36 11 16 5 36 11 30K 36 11 16 5 36 11 18 COOLING PERFORMANCE DATA Model Cooling Outdoor conditions DB Indoor Conditions DB Indoor Conditions WB 77F 25C 86F 30C 95F 35C 104F 40C 113F 45C 122F 50C TC 7 43 7 83 9 74 8 38 6 11 5 11 69 8 21 59F 15C SC 6 68 6 69 8 18 7 37 4 36 3 74 Input 0 35 0 54 0 81 0 8 0 75 0 75 TC 7 78 9 14 9 89 8 65 6 92 5 83 75 2F 24C 62 6F 17C SC 3 58 8 11 6 27 5 52 4 85 4 29 09 Input 0 35 0 54 0 81 0 8 0 75 0 75 115V TC 8 21 9 22 10 41 9 27 7 32 6 80 6F 27C 66 2F 19C SC 7 39 5 88 8 22 7 79 5 11 4 37 Input 0 35 0 75 0 82 0 81 0 75 0 75 TC 8 41 9 72 11 59 10 22 8 82 7 51 89 6F 32C 73 4F 23C SC 3 68 5 76 6 9 6 2 5 55 5 Input 0 36 0 56 0 83 0 82 0 76 0 77 TC 8 21 11 75 11 42 9 7 85 6 68 69 8 21 59F 15C SC 7 06 9 05 8 68 7 38 6 42 5 58 Input 0 38 0 8 1 04 0 87 0 82 0 81 TC 8 42 11 84 12 01 9 35 8 32 7 34 75 2F 24C 62 6F 17C SC 7 28 8 69 8 66 7 62 6 53 5 81 12 Input 0 57 0 94 1 25 1 27 0 98 0 94 115V TC 8 81 11 95 12 23 9 69 8 87 7 95 80 6F 27C 66 2F 19C SC 7 49 8 32 8 63 7 85 6 64 6 04 I
68. wer kW 19 HEATING PERFORMANCE Model Heating Outdoor conditions DB ode Indoor Conditions DB 53 6F 12C 44 6 7 39 2F 4C 32F 0C 24 8F 4C 19 4F 7C 17F 8C 5F 15C TH 11 2 11 1 10 89 10 65 9 87 9 11 8 27 6 71 59F 15C Input 0 73 0 79 1 04 1 01 0 96 0 9 0 84 0 8 TH 11 1 10 8 10 65 10 54 9 63 8 84 8 01 5 46 64 4F 18C Input 0 78 0 8 1 08 1 03 0 98 0 94 0 9 0 82 09 115V TH 10 8 10 6 10 48 10 32 9 43 8 55 7 95 4 29 69F 20 5C Input 0 8 0 81 1 11 1 05 1 0 98 0 96 0 84 TH 10 6 10 3 10 21 10 11 9 23 8 41 7 89 4 11 71 6F 22C Input 0 82 0 83 1 15 1 07 1 02 1 02 0 92 0 86 TH 11 8 12 7 12 42 11 32 10 4 9 54 8 9 5 75 59F 15C Input 0 79 1 01 1 05 1 1 1 02 1 0 98 0 83 TH 12 1 12 7 12 32 11 34 10 32 9 32 8 81 6 14 64 4F 18C Input 0 83 1 37 1 4 1 26 1 22 1 27 1 01 0 91 12 115V TH 12 3 12 6 12 12 11 32 10 21 9 12 8 43 6 49 69 20 5 Input 0 83 1 1 1 12 1 19 1 19 1 25 1 03 0 98 TH 11 1 12 4 12 01 11 21 10 01 9 02 8 21 6 01 71 6F 22C Input 0 85 1 15 1 16 1 21 1 23 1 31 1 05 1 59F 15C TH 11 2 11 1 10 89 10 65 9 87 9 11 8 27 6 71 Input 0 73 0 79 1 04 1 01 0 96 0 9 0 84 0 8 TH 11 1 10 8 10 65 10 54 9 63 8 84 8 01 5 46 64 4F 18C 09 Input 0 78 0 8 1 08 1 03 0 98 0 94 0 9 0 82 208 230V TH 10 8 10 6 10 48 10 32 9 43 8 55 7
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