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Pioneer DR024GHFD18HT2, Service Manual, Page: 1 / 25

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Technical &

Service Manual

CENTRAL SPLIT AIR CONDITIONER

IMPORTANT NOTICE:

 Thank you very much for purchasing this Air Conditioner. Please read this manual carefully before 

installing or operating your new air conditioning system. Be sure to save this manual for future reference.

HIGH EFFICENCY

AIR HANDLER

Models:
• DR024GHFD18HT2
• DR036GHFD18HT2
• DR048GHFD18HT2
• DR060GHFD18HT2

- R-410A REFRIGERANT
- 208~230 V, 1 Phase, 60 Hz
- 18 SEER

Summary of Contents for DR024GHFD18HT2

Page 1: ...is Air Conditioner Please read this manual carefully before installing or operating your new air conditioning system Be sure to save this manual for future reference HIGH EFFICENCY AIR HANDLER Models DR024GHFD18HT2 DR036GHFD18HT2 DR048GHFD18HT2 DR060GHFD18HT2 R 410A REFRIGERANT 208 230 V 1 Phase 60 Hz 18 SEER ...

Page 2: ...hese products are equipped with electrical parts If poured it will cause a serious electrical shock Do not open the service cover or access panel for the indoor or outdoor units without turning OFF the main power supply Do not touch or adjust safety devices inside the indoor or outdoor units If these devices are touched or readjusted it may cause a serious accident Refrigerant leakage can cause di...

Page 3: ...step or put any material on the product Do not put any foreign material on the unit or inside the unit It is recommended that the room be ventilated every 3 to 4 hours The air conditioner may not work properly under the following circumstances The power transformer provides the same power with the air conditioner The electrical equipment is too close to the power supply of the air conditioner With...

Page 4: ... Electrical data 7 5 Blower data 8 6 Sound data 10 7 Refrigerant cycle 11 8 Wiring diagram 12 8 1 Electrical wiring diagrams 12 8 2 Control board picture 13 8 3 Common wiring 14 9 Field setting 15 10 Checking components 16 10 1 Check refrigerant system 16 10 2 Check parts unit 18 11 Disassembly and assembly for compressor and motor 19 12 Control logic description 20 Table of Contents ...

Page 5: ...cooling and heating Multi speed ECM blower motor Being in accordance with ETL AHRI 24K 36K 48K 60K Air Handler Model Btu h Type 1 available model Up to 0 8W C ESP Selecting electric heater kits within available models 1 2 Product Lineup DR024GHFD18HT2 DR036GHFD18HT2 DR048GHFD18HT2 DR060GHFD18HT2 ...

Page 6: ...r unit can be connected with one outdoor unit Power Supply Storage Condition Temperature 13 140 25 60 Humidity 30 80 24K Working Voltage Voltage Imbalance Starting Voltage 198V 253V Within a 3 deviation from each voltage at the main terminal of outdoor unit Higher than 85 of the Rated Voltage 2 24K 36K 48K 60K Model Btu h Indoor Unit ...

Page 7: ... h 4 64 9 5 11 6 15 80 Min Ampacity A Indoor3 3 Indoor4 8 Indoor6 8 Indoor6 8 Max td Fuse Breaker A Indoor10 Indoor10 Indoor15 Indoor15 Power Cable No AWG Indoor3 16 Indoor3 16 Indoor3 16 Indoor3 16 Communication Cable No AWG 5 16 5 16 5 16 5 16 Thermostat Type Common 24V Thermostat Common 24V Thermostat Common 24V Thermostat Common 24V Thermostat Indoor Fan Motor Multi Speed ECM Qty 1 1 1 1 Model...

Page 8: ...nage Water Pipe Diameter inch 3 4 3 4 3 4 3 4 Design Pressure H L MPa 3 8 1 6 3 8 1 6 3 8 1 6 3 8 1 6 PSIG 550 240 550 240 550 240 550 240 Qty per 20 40 40 HQ Indoor Unit Set 36 72 144 36 72 144 39 78 102 39 78 102 Indoor Coil NOTE 1 Test Conditions 1 1 Rated Capacity Test Conditions Cooling Indoor DB 80 0 26 7 C WB 67 0 19 4 C Outdoor DB 95 0 35 0 C WB 75 0 23 9 C Heating Indoor DB 70 0 21 1 C WB...

Page 9: ...3 OUTLINES AND DIMENSIONS 3 Outlines and Dimensions 5 Unit in mm 24K 36K ...

Page 10: ...3 OUTLINES AND DIMENSIONS 6 Unit in mm 48K 60K 24 610 ...

Page 11: ...ive Current mA 24K 36K 208 230 1 60 198 253 15 30 48K 60K 30 7 NOTE 1 The above compressor data is based on 100 capacity combination of indoor units at the rated operating frequency 2 This data is based on the same conditions as the nominal heating and cooling capacities 3 The compressor is started by an inverter resulting in extremely low starting current ...

Page 12: ... KPa 0 0 0 1 0 02 0 18 0 045 0 3 0 07 0 4 0 1 0 5 0 12 0 6 0 15 0 7 0 17 0 8 0 20 24K Tap 1 Default Setting CFM 815 792 752 709 676 653 615 566 512 Watts 94 102 110 123 130 139 148 157 167 Tap 2 CFM 862 828 792 735 705 673 661 618 561 Watts 106 114 125 137 145 154 161 170 177 Tap 3 CFM 975 940 906 859 853 803 769 735 681 Watts 148 155 165 178 185 193 203 213 219 Tap 4 CFM 1055 1024 995 948 922 895...

Page 13: ... 2 CFM 1799 1746 1678 1634 1571 1522 1449 1402 1241 Watts 366 377 388 398 410 419 428 444 440 Tap 3 CFM 1828 1794 1749 1719 1670 1633 1589 1553 1510 Watts 376 387 401 413 428 437 452 465 482 Tap 4 CFM 1888 1855 1813 1782 1735 1701 1665 1626 1585 Watts 415 428 445 456 469 481 495 510 525 0 18 0 045 Air Handler Model Motor Speed External Static Pressure in H2O KPa 0 0 0 1 0 02 0 18 0 045 0 3 0 07 0 ...

Page 14: ...d level C Octave band center frequency Hz Model 48K 60K Test Condition 3 28ft 1 0m in front of the outlet of the wind tunnel 3 28ft 1 0m above the bottom of the unit Total octave band sound level dB total sound level C Octave band center frequency Hz NC 15 NC 20 NC 25 NC 30 NC 35 NC 40 NC 45 NC 50 NC 55 NC 60 NC 65 NC 70 10 20 30 40 50 60 70 80 90 63 125 250 500 1k 2k 4k 8k NC 15 NC 20 NC 25 NC 30...

Page 15: ...7 REFRIGERANT CYCLE 7 Refrigerant Cycle 11 Indoor Unit 24K 36K 48K 60K Cooling Cycle Heating Cycle 1 Hexagon Nut 2 3 TXV Indoor Heat Exchanger List of Components ...

Page 16: ... R to R G to G etc See Installation Instruction for details 5 Check airflow table to ensure appropriate operations 6 The EHK is optional If EHK needs to be installed please see Wiring Diagram of EHK for wiring details 7 The dashed line means that the component or wire are optional 8 The DIP switch S2 in the diagram is the factory default configuration In actual use please set S2 to choose blower s...

Page 17: ...escription 1 Thermostat 8 L2 for Fan Motor 2 9 AC Power L2 3 10 AC Power L1 4 Electrical Heat Kit 11 L1 for Fan Motor 5 DIP Switch for Blower Speed 12 L1 for Transformer 6 Fan Motor Control Fuse L2 for Transformer AC 24V from Transformer 7 1 2 3 4 12 11 10 5 6 8 7 9 ...

Page 18: ...lled on indoor unit power source cable should be installed separately and the size should be selected in accordance with UL 6 18AWG 8 3 Common Wiring Wiring Diagram L1 L2 PE Power Supply Power Supply Thermostat Indoor Unit Outdoor Unit Power Terminal Panel L1 L2 W1 B C R Y G C B Y W SI G R C W1 SI NOTE 1 Do not connect dashed line when electric heater is not used 2 Wiring must be performed accordi...

Page 19: ...lect 2 Medium Low Default setting 0 18 0 045 0 24 0 057 0 28 0 07 3 Medium 0 25 0 08 0 4 0 1 0 4 0 1 4 Medium High 0 58 0 145 0 58 0 145 0 58 0 145 5 High 0 8 0 2 0 8 0 2 0 8 0 2 Static Pressure W C kPa 48K 60K Blower Speed Tap NOTE Symbol indicates the position of the DIP switch Symbol indicates any position of ON or OFF ...

Page 20: ...n the low side Recharge refrigerant after air purging with the vacuum pump Is the low pressure normal over again Air remains at the refrigerant system yes The system needs refrigerant The service people must charge refrigerant Does the low pressure rise NO Recharge refrigerant yes The refrigerant system is blocked Please check the Capillary Tube or electronic expansion valve Is it blocked Unsolder...

Page 21: ...yes The system needs refrigerant The service people must be charge refrigerant Does the high pressure rise in heating mode NO Recharge refrigerant yes If the pressure is close to static pressure 4 way valve collude or compressor exhaust every ebb yes Check heat exchanger and 4 way valve NO The capillary tube is blocked Unsolder the capillary tube ASS Y The capillary tube1 and capillary tube2 is bl...

Page 22: ... circuit or open circuit Test in voltage TOOL Multimeter Insert screwdriver to rotate indoor fan motor slowly for 1 revolution or over and measure voltage YELLOW and GND on motor The voltage repeat 0V DC and 5V DC NOTES Please don t hold motor by lead wires Please don t plug IN OUT the motor connector while power is ON Please don t drop hurl or dump motor against hard material Malfunction may not ...

Page 23: ...nstruction 1 Remove the top panel and unplug the motor cables Use screwdriver to remove the electric box cover and unplug the motor cables in electric box 2 Take out the fan snail shell unit Use screwdriver to unscrew two bolts from the top of the unit 3 Remove the motor and the motor mount 4 Reassembly of the unit Assemble the unit Use wrench to unscrew three bolts from the side of shell Reassemb...

Page 24: ... 9 40 7 33 8 50 40 50 35 21 4245 05 20 56 7 49 9 51 9 45 2 60 50 60 50 MIN Circuit Ampacity 208VAC 230VAC MAX Fuse or Breaker HACR Ampacity 208VAC 230VAC Fan Speed Tap available unavailable NOTES 1 To be wired in accordance with NEC and local codes 2 Fan speed selection 1 Medium low 2 Medium 3 Medium high 4 High 3 The heater kit must be connected to the power supply separately 4 Check if heat kit ...

Page 25: ...e for convenient ordering at www highseer com www pioneerminisplit com Scan the below code to visit our support page where you can find more installation materials Copyright 2022 Parker Davis HVAC International Inc All rights reserved The design and specifications of this product are subject to change without prior notice as development continues Consult with the sales agency or manufacturer for d...

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