Service and Troubleshooting
A/GPDM3 13.4 SEER2 “M” SERIES - Single Package
Dual Fuel Gas-Electric Heating & Cooling Units
RS6313001r7
September 2022
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.
©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 AND/OR RELAYS ............ 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
CHECKING FAN AND BLOWER MOTOR WINDINGS
(PSC MOTORS) .......................................................... 21
CHECKING EEM MOTORS ........................................ 21
CHECKING COMPRESSOR ....................................... 22
RESISTANCE TEST .................................................... 22
GROUND TEST .......................................................... 23
OPERATION TEST...................................................... 23
LOCKED ROTOR TEST ............................................. 24
TESTING CRANKCASE HEATER (OPTIONAL ITEM) 24
CHECKING REVERSING VALVE AND SOLENOID ... 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
DEEP VACUUM METHOD (RECOMMENDED) ......... 26
TRIPLE EVACUATION METHOD (ALTERNATE) ....... 27
CHARGING ................................................................. 27
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.
WARNING
WARNING
DO NOT BYPASS SAFETY DEVICES
