1. Manuals
  2. Brands
  3. Daikin Manuals
  4. Air Conditioner
  5. M Series
  6. Service and troubleshooting

Daikin M Series Service And Troubleshooting

13.4 seer2 single package dual fuel gas-electric heating & cooling units
Hide thumbs Also See for M Series:
Table of Contents

Advertisement

Quick Links

Download this manual
Service and Troubleshooting
A/GPDM3 13.4 SEER2 "M" SERIES - Single Package
Dual Fuel Gas-Electric Heating & Cooling Units
Pride and workmanship go into every product to provide
our customers with quality products. It is possible, however,
that during its lifetime a product may require service.
Products should be serviced only by a qualified service
technician who is familiar with the safety procedures
required in the repair and who is equipped with the proper
tools, parts, testing instruments and the appropriate service
manual. REVIEW ALL SERVICE INFORMATION IN THE
APPROPRIATE SERVICE MANUAL BEFORE
BEGINNING REPAIRS.
ONLY PERSONNEL THAT HAVE BEEN TRAINED TO INSTALL,
ADJUST, SERVICE, MAINTENANCE OR REPAIR
(HEREINAFTER, "SERVICE") THE EQUIPMENT SPECIFIED
IN THIS MANUAL SHOULD SERVICE THE EQUIPMENT. THE
MANUFACTURER WILL NOT BE RESPONSIBLE FOR ANY
INJURY OR PROPERTY DAMAGE ARISING FROM IMPROPER
SERVICE OR SERVICE PROCEDURES. IF YOU SERVICE
THIS UNIT, YOU ASSUME RESPONSIBILITY FOR ANY INJURY
OR PROPERTY DAMAGE WHICH MAY RESULT. IN ADDITION,
IN JURISDICTIONS THAT REQUIRE ONE OR MORE
LICENSES TO SERVICE THE EQUIPMENT SPECIFIED IN THIS
MANUAL, ONLY LICENSED PERSONNEL SHOULD SERVICE
THE EQUIPMENT. IMPROPER INSTALLATION, ADJUSTMENT,
SERVICING, MAINTENANCE OR REPAIR OF THE EQUIPMENT
SPECIFIED IN THIS MANUAL, OR ATTEMPTING TO INSTALL,
ADJUST, SERVICE OR REPAIR THE EQUIPMENT SPECIFIED
IN THIS MANUAL WITHOUT PROPER TRAINING MAY RESULT
IN PRODUCT DAMAGE, PROPERTY DAMAGE, PERSONAL
INJURY OR DEATH.
DO NOT BYPASS SAFETY DEVICES
WARNING
WARNING
©2020-2022 Daikin Comfort Technologies Manufacturing, L.P.

TABLE OF CONTENTS

IMPORTANT INFORMATION ............................................ 2
PRODUCT IDENTIFICATION ........................................... 5
SYSTEM OPERATION ...................................................... 7
SCHEDULED MAINTENANCE ....................................... 15
SERVICING ..................................................................... 17
CHECKING VOLTAGE ............................................... 17
CHECKING WIRING ................................................... 17
CHECKING THERMOSTAT AND WIRING ................. 17
INDOOR BLOWER MOTOR ....................................... 17
CONTROL CIRCUIT .................................................... 18
CHECKING CONTACTOR CONTACTS ...................... 18
CHECKING FAN RELAY CONTACTS ......................... 19
CHECKING HIGH PRESSURE CONTROL ................ 19
CHECKING LOW PRESSURE CONTROL ................. 19
CHECKING CAPACITOR ............................................ 19
CAPACITANCE CHECK .............................................. 20
(PSC MOTORS) .......................................................... 21
CHECKING EEM MOTORS ........................................ 21
CHECKING COMPRESSOR ....................................... 22
RESISTANCE TEST .................................................... 22
GROUND TEST .......................................................... 23
OPERATION TEST...................................................... 23
LOCKED ROTOR TEST ............................................. 24
TESTING DEFROST CONTROL ................................ 25
TESTING DEFROST THERMOSTAT .......................... 25
REFRIGERATION REPAIR PRACTICE ...................... 25
STANDING PRESSURE TEST ................................... 26
(NITROGEN OR NITROGEN-TRACED) ..................... 26
SYSTEM EVACUATION .............................................. 26
CHARGING ................................................................. 27
RS6313001r7
September 2022

Advertisement

Table of Contents
loading

Related Manuals for Daikin M Series

Summary of Contents for Daikin M Series

  • Page 1: Table Of Contents

    DO NOT BYPASS SAFETY DEVICES LEAK TESTING (NITROGEN OR NITROGEN-TRACED) ..... 26 SYSTEM EVACUATION ..........26 DEEP VACUUM METHOD (RECOMMENDED) ..26 TRIPLE EVACUATION METHOD (ALTERNATE) ..27 CHARGING ..............27 RS6313001r7 September 2022 ©2020-2022 Daikin Comfort Technologies Manufacturing, L.P.

  • Page 2: Important Information

    IMPORTANT INFORMATION IMPORTANT NOTICES FOR CONSUMERS AND SERVICERS RECOGNIZE SAFETY SYMBOLS, WORDS AND REFRIGERANT CHARGE CHECK ......28 LABELS CHECKING SUPERHEAT ........... 28 CHECKING SUBCOOLING ......... 28 CHECKING COMPRESSOR EFFICIENCY ....29 FIXED ORIFICE RESTRICTION DEVICES ....32 WARNING CHECKING EQUALIZATION TIME ......32 CHECKING RESTRICTED LIQUID LINE ....
  • Page 3 IMPORTANT INFORMATION SAFE REFRIGERANT HANDLING WARNING While these items will not cover every concievable situation, they should serve as a usefull guide. The compressor POE oil for R-410A units is extremely susceptible to moisture absorption and could cause compressor failure. Do not leave system open to atmosphere any longer than necessary for installation.
  • Page 4 IMPORTANT INFORMATION WARNING AVERTISSEMENT FIRE OR EXPLOSION HAZARD RISQUE D’INCENDIE OU D’EXPLOSION Si les consignes de sécurité ne sont pas suivies à la Failure to follow the safety warnings exactly could result in lettre,cela peut entraîner la mort, de graves blessures ou serious injury, death or property damage.

  • Page 5: Product Identification

    PRODUCT IDENTIFICATION NOMENCLATURE The model number is used for positive identification of component parts used in manufacturing. Please use this number when requesting service or parts information. Nomenclature 8,9,10 Brand Minor Revision A Amana® Brand Major Revision Product Category Electrical P Packaged Unit 1 - 208/230V single-phase, 60 Hz Unit Type...
  • Page 6 PRODUCT IDENTIFICATION Single Phase Dual Fuel Package Units Model # Description Amana® Brand Package Dual Fuel Units, 14 SEER with R410A. APD14[24-48]***M41AA Initial release of 81% AFUE models. Goodman® Brand Package Dual Fuel Units, 14SEER with R410A. GPD14[24-48]***M41AA Initial release of 81% AFUE models. Amana®...

  • Page 7: System Operation

    SYSTEM OPERATION Heat Pump Models Any time the room thermostat is switched to cool, the O terminal is energized. This energizes the 24 volt coil on the reversing valve and switches it to the cooling position. Cooling The refrigerant used in the system is R-410A. It is a clear, When the contacts of the room thermostat close, this colorless, non-toxic and non-irritating liquid.
  • Page 8 SYSTEM OPERATION 5. Flame is achieved and detected during trial-for- ignition period. Flame stabilization period begins when flame is detected. 6. Gas valve and induced draft blower remain at high When the thermostat is satisfied, breaking the circuit stage and high speed. between R to Y and R to G, the compressor and outdoor 7.
  • Page 9 SYSTEM OPERATION 1. The thermostat sends a 24VAC signal on Y to the unit requesting heating. 2. Contactor is energized starting the compressor and outdoor fan. 1. Low and high stage compressor outputs are 3. Request sent to indoor blower motor for heating energized.
  • Page 10 SYSTEM OPERATION Cooling temperature, a twelve minute override interrupts the unit’s 1. Thermostat calls for cooling. defrost period. At this time the W1 signal is removed from 2. When the thermostat call is for cooling, the the ignition control board, the compressor will stop for a 30 compressor and outdoor fan are energized .
  • Page 11 SYSTEM OPERATION Typical Heat Pump System in Cooling Reversing Valve (Energized) Indoor Outdoor Coil Coil Accumulator Typical Heat Pump System in Heating Reversing Valve (De-Energized) Indoor Outdoor Coil Coil Accumulator...
  • Page 12 SYSTEM OPERATION PCBAG127 Control Board recall button for at least 5 seconds. Description The ignition control is designed for use in gas heating/ The following tables list the functions for the connectors electric cooling package equipment (rooftop applications) and terminals, the timings, and the fault codes for the and operates with a two stage heat and two stage cooling PCBAG127 control board.
  • Page 13 SYSTEM OPERATION Voltage Function 24VAC Indoor/Outdoor Thermostat (IDT/ODT) Output 24VAC High Stage Compressor Output 24VAC Pressure Switch/Loss of Charge Switch Input 24VAC Indoor/Outdoor Thermostat (IDT/ODT) Input 24VAC Pressure Switch/Loss of Charge Switch Output 24VAC Low Stage Compressor Output Table 1: Circuit Definitions and Voltage Ratings for the 6-Circuit Connector Circuits Voltage Function...
  • Page 14 SYSTEM OPERATION Period Timing Pre-Purge 15 Seconds Inter-Purge 30 Seconds Post Purge 30 Seconds Trial-for-Ignition (TFI) 7 Seconds Flame Stabilization Period 10 Seconds 2 Seconds within Flame Stabilization Period Flame Failure Response Time 2 Seconds or Per ANSI Z21.20 Outside of Flame Stabilization Period Low to High Stage Delay Selectable 5 minutes or 10 minutes (Default = 10 minutes) Heat ON Delay...

  • Page 15: Scheduled Maintenance

    SCHEDULED MAINTENANCE and microamp signal. Adjust if necessary. 10. Start the system and run a Heating Performance Test. If the results of the test are not satisfactory, see Package gas units require regularly scheduled the “Service Problem Analysis” Guide for the possible maintenance to preserve high performance standards, cause.
  • Page 16 6. Check with your local utility for actual BTU content SCHEDULED MAINTENANCE (caloric value) of natural gas in the area (the average is 1025 BTU’s). 3. Once heating cycle is at a steady state (typically 15 7. Use this formula to calculate the BTU/HR input (See minutes of operation), use a stopwatch to time how BTU/HR Calculation Example): Cubic Feet per Hour (CFH) x BTU content of your...

  • Page 17: Checking Voltage

    SERVICING suspected open wires. 3. If any wires must be replaced, replace with comparable gauge and insulation thickness. Checking Voltage Branch Circuit Am- 15 20 25 30 35 40 45 50 pacity WARNING SUPPLY WIRE LENGTH - FEET High Voltage! Disconnect all power before servicing or installing.

  • Page 18: Checking Transformer And Control Circuit

    SERVICING Checking Contactor and/or Relays Checking Transformer and Control Circuit WARNING WARNING High Voltage! Disconnect all power before servicing or installing. Multiple power sources may be present. High Voltage! Failure to do so may cause property damage, Disconnect all power before servicing or personal injury or death.

  • Page 19: Checking Fan Relay Contacts

    SERVICING WARNING Line voltage now present 3. Start the system and place a piece of cardboard in front of the condenser coil, raising the condensing pressure. 4. Check pressure at which the high pressure control cuts-out. If it cuts-out at 660 PSIG ± 10 PSIG, it is operating normally (See causes for high head pressure in Service Problem Testing Compressor Contactor Analysis Guide).

  • Page 20: Capacitance Check

    SERVICING Capacitor, Start Scroll Compressor Models Hard start components are not required on Scroll compressor equipped units due to a non-replaceable check valve located in the discharge line of the compressor. However hard start kits are available and may improve low voltage starting characteristics.

  • Page 21: Checking Fan And Blower Motor Windings (Psc Motors)

    SERVICING If the windings do not test continuous or a reading is obtained from lead to ground, replace the motor. 6. Place leads from C – FAN 7. Compare to capacitor rating label. Checking EEM Motors The EEM motor is a one piece, fully encapsulated, 3 phase If the reading is within the tolerance listed on rating label brushless DC (single phase AC input) motor with ball the capacitor is good.

  • Page 22: Checking Compressor

    SERVICING from the venting terminal without the presence of an external ignition source. Therefore, proper evacuation of a hermetic system is High Voltage essential at the time of manufacture and during servicing. Connections To reduce the possibility of external ignition, all open 3/16"...

  • Page 23: Ground Test

    SERVICING WARNING Damage can occur to the glass embedded terminals if the leads are not properly removed. This can result in terminal and hot oil discharging. Testing Compressor Windings If either winding does not test continuous, replace the compressor. NOTE: If an open compressor is indicated, allow Compressor Ground Test ample time for the internal overload to reset before replacing compressor.

  • Page 24: Locked Rotor Test

    SERVICING 2. Using an ohmmeter, check heater continuity - should test continuous. If not, replace. Checking Reversing Valve And Solenoid A. If the compressor starts and continues to run, the Reversing valve used in heat pumps could potentially leak cause for failure is somewhere else in the sys- internally.

  • Page 25: Testing Defrost Control

    SERVICING 6. Using VOM check for voltage across fan terminals DF1 and DF2 on the board. You should read line voltage (208-230 VAC) indicating the relay is open in remove the coil connector cap and test the continuity of the defrost mode the reversing valve solenoid coil.

  • Page 26: Standing Pressure Test

    SERVICING WARNING materials do not flow well on oxidized or oily To avoid possible explosion, the line from the surfaces. nitrogen cylinder must include a pressure 4. Clean the inside of all new tubing to remove oils and regulator and a pressure relief valve. The pressure relief valve must be set to open at no pipe chips.

  • Page 27: Triple Evacuation Method (Alternate)

    SERVICING 2. Evacuate the system to less than 500 microns. LOW SIDE HIGH SIDE GAUGE GAUGE 3. Isolate the pump from the system and hold vacuum AND VALVE AND VALVE for 10 minutes (minimum). Typically, pressure will rise slowly during this period. If the pressure rises to less than 1000 microns and remains steady, the system is considered leak-free;...

  • Page 28: Refrigerant Charge Check

    SERVICING Ambient Condenser Return Air Temp. (°F Drybulb) Inlet Temp (°F Drybulb) 2. After the system will take all it will take, close the valve on the high side of the charging manifold. 3. Start the system and charge the balance of the refrigerant through the low side.

  • Page 29: Checking Compressor Efficiency

    SERVICING NOTE: R410A should be drawn out of the storage container or drum in liquid form due to its fractionation properties, but should be “Flashed” to its gas state before entering the system. There are commercially available restriction devices that fit into the system charging hose set to accomplish this.
  • Page 30 SERVICING Pressure vs. Temperature Chart R-410A PSIG °F PSIG °F PSIG °F PSIG °F PSIG °F PSIG °F -37.7 37.8 74.3 100.2 120.7 137.6 114.0 216.0 318.0 420.0 522.0 -34.7 38.7 74.9 100.7 121.0 137.9 116.0 218.0 320.0 422.0 524.0 -32.0 39.5 75.5...
  • Page 31 SERVICING REQUIRED LIQUID LINE TEMPERATURE LIQUID PRESSURE REQUIRED SUBCOOLING TEMPERATURE (°F) AT SERVICE VALVE (PSIG)

  • Page 32: Fixed Orifice Restriction Devices

    SERVICING will have normal to high subcooling. If a restriction is located, replace the restricted part, replace Fixed Orifice Restriction Devices drier, evacuate and recharge. The fixed orifice restriction device (flowrator) used in Refrigerant Overcharge conjunction with the indoor coil is a predetermined bore (I.D.).

  • Page 33: Compressor Burnout

    SERVICING NOTE: The Flushing Method using R-11 refrigerant is no longer approved by Amana® Brand Heating- Cooling. Suction Line Drier Clean-Up Method The POE oils used with R410A refrigerant is an excellent solvent. In the case of a burnout, the POE oils will remove any burnout residue left in the system.

  • Page 34: Checking External Static Pressure

    SERVICING Adjusting Airflow heat to the valve body when brazing the line connection. The A/GPDM3 models are equipped with EEM motors. EEM motors are constant torque motors with very low The use of a wet rag sometimes can be a nuisance. There power consumption.

  • Page 35: Testing Primary Limit Control

    SERVICING The control will automatically reset when the temperature within the combustion chamber is sufficiently lowered. WARNING High Voltage! Disconnect all power before servicing or installing. Multiple power sources may be present. SUPPLY Failure to do so may cause property damage, personal injury or death.

  • Page 36: Checking Flame Rollout Switch

    SERVICING WARNING High Voltage! Disconnect all power before servicing or installing. Multiple power sources may be present. Failure to do so may cause property damage, personal injury or death. 1. Remove the wires from the auxiliary limit control terminals. 2. Using an ohmmeter, test for continuity across the two terminals.

  • Page 37: Testing Inducer Motor

    SERVICING Testing Inducer Motor LED on the control flashes “4” to indicate an open limit WARNING switch. The blower and inducer remain on while the limit switch is open. The gas valve is de-energized. Power to High Voltage! the thermostat “R” is removed while the limit switch is open. Disconnect all power before servicing or installing.

  • Page 38: Checking Main Burners

    SERVICING STREAM B DENT OR BURR STREAM B White Rodgers Model 36G54 (Two Stage) The length of Dimension “A” determines the angle of Gas Stream Defraction, “B”. Checking Main Burners The main burners are used to provide complete A dent or burr will cause severe deflection of gas stream. combustion of various fuels in a limited space, and transfer this heat of the burning process to the heat exchanger.

  • Page 39: Gas Inlet Pressure Check

    SERVICING INLET GAS PRESSURE Natural Min 5.0” W.C., Max 10.0” W.C. 1. Connect a digital manometer to the inlet pressure Propane Min 11.0” W.C., Max 13.0” W.C. fitting of the gas valve. NOTE: Inlet Gas Pressure Be Within the Minimum and 2.

  • Page 40: Checking For Delayed Ignition

    SERVICING Checking For Flashback Flashback will also cause burning in the burner venturi, but Adjust manifold pressure using the Manifold Gas is caused by the burning speed being greater than the gas- Pressure table shown below. air flow velocity coming from a burner port. Flashback may occur at the moment of ignition, after a burner heats up or when the burner turns off.

  • Page 41: High Altitude Application

    SERVICING within the range listed on the unit nameplate. Refer to the Installation Manual provided with the LP kit for conversion from natural gas to propane gas and for 3. Remove the pressure control hose from the control altitude adjustments. and interconnect with a digital manometer as shown: When this package unit is installed at high altitude, the appropriate High Altitude orifice kit must be installed.
  • Page 42 SERVICING B. No voltage - check thermostat and thermostat wiring. C. Voltage present - check for 24 volts at gas valve INDUCER OD F terminals C and HI. PARK LOW HIGH HIGH D. No voltage present at valve - check 9 pin connector and wires from ignition control to gas valve.

  • Page 43: Checking Flame Sensor

    SERVICING DSI Direct Spark Ignition Systems WARNING pin connector and wires from compressor unloader solenoid to 6 pin connector on board. High Voltage! Disconnect all power before servicing or If connector and wires check good, replace installing. Multiple power sources may be present. control.
  • Page 44 SERVICING Blower Performance A/GPDM32406041A* - Rise Range: 25° - 55° Stage Heating Speed Stage Heating Speed Cooling Speed Cooling Speed Cooling Speed E.S.P WATTS RISE WATTS RISE WATTS WATTS WATTS 1069 1054 1174 1020 1007 1134 1093 1050 1007 A/GPDM33008041A* - Rise Range: 35° - 65° Stage Heating Speed Stage Heating Speed Cooling Speed...
  • Page 45 SERVICING Blower Performance A/GPDM34210041A* - Rise Range: 35° - 65° Stage Heating Speed Cooling Speed Cooling Speed Cooling Speed Stage Heating Speed E.S.P WATTS RISE WATTS RISE WATTS WATTS WATTS 1098 1423 1354 1535 1677 1038 1375 1296 1489 1633 1322 1237 1440...

  • Page 46: Troubleshooting

    TROUBLESHOOTING DIAGNOSTIC CHECK CHECK STATUS LED - RED NORMAL OPERATION CHECK INPUT POWER NO POWER OR INTERNAL CONTROL CHECK FUSE(S) FAULT GAS FLOW GAS PRESSURE 1 FLASH IGNITION FAILURE GAS VALVE FLAME SENSOR CHECK PRESSURE SWITCH 2 FLASHES CHECK TUBING PRESSURE SWITCH OPEN CHECK VENT MOTOR PRESSURE SWITCH CLOSED...
  • Page 47 TROUBLESHOOTING IGNITION CONTROL DIAGNOSTIC INDICATOR CHART Red Light Signal Refer to Abnormal Heating or Cooling Operation Sections of this Manual Internal Control Failure 1 Flash External Lockout 2 Flashes Pressure Switch Stuck Open 3 Flashes Pressure Switch Stuck Closed 4 Flashes Thermal Protection Device Open 5 Flashes Flame Detected with Gas Valve Closed...

  • Page 48: Wiring Diagrams

    WIRING DIAGRAMS (A/GPDM3[24-48]***41A*) SEE NOTE 7 S R C SEE NOTE 8 COMP SEE NOTE 4 RCCF C-RV R-PS1 O-RV LVDR BL/PK BL/PK HVDR R-DFT P1 - PIN # 1 SEE NOTE 2 P1 - PIN # 6 P1 - PIN # 8 P1 - PIN # 3 P1 - PIN # 5 P1 - PIN # 2...
  • Page 49 WIRING DIAGRAMS (A/GPDM3[24-48]***41A*) SUPPLY VOLTAGE 208-230/1/60 COMPONENT LEGEND SEE NOTE 7 AUXILLARY LIMIT SWITCH FACTORY WIRING CONTACTOR CRANKCASE HEATER LINE VOLTAGE SEE NOTE 8 CRANKCASE HEATER SWITCH LOW VOLTAGE CONDENSER MOTOR COMP OPTIONAL HIGH COMP COMPRESSOR RCCF C VOLTAGE DEFROST CONTROL BOARD DEFROST THERMOSTAT FIELD WIRING DEFROST RELAY...
  • Page 50 WIRING DIAGRAMS Jade Economizer Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
  • Page 51 GOODMAN BRAND ® AMANA BRAND ® ©2020-2022 Daikin Comfort Technologies Manufacturing, L.P. Brand is a registered trademark of Maytag Corporation or its related companies and is used under license. All rights reserved. ®...

This manual is also suitable for:

A/gpdm3 series

Table of Contents