Daikin DAR09 - Servicing Procedures; Motor and Compressor Checks

51
SERVICING
S-2 CHECKING WIRING.......................................................52
S-3A THERMOSTAT AND WIRING..........................................52
S-4 CHECKING TRANSFORMER AND CONTROL CIRCUIT.....53
S-7 CHECKING CONTACTOR AND/OR RELAYS.....................53
S-8 CHECKING CONTACTOR CONTACTS..............................53
S-9 CHECKING FAN RELAY CONTACTS.................................54
S-10 MBR/AR*F ELECTRONIC BLOWER TIME DELAY RELAY..54
S-11 CHECKING Loss OF Charge PROTECTOR .......................55
S-12 CHECKING HIGH PRESSURE CONTROL .........................55
S-13 CHECKING LOW PRESSURE CONTROL...........................55
S-114A Copeland CORESENSE™................................................55
S-15 CHECKING CAPACITOR..................................................60
S-15A Resistance Check using a digital mul-meter...............60
S-16B Capacitance Check using a digital mul-meter
(In capacitance mode)..................................................61
S-16 CHECKING FAN AND BLOWER MOTOR WINDINGS
(PSC MOTORS)..............................................................61
S-16A CHECKING High Eciency MOTORS..............................61
S-17B eem BLOWER REPLACEMENT.......................................61
S-16C MBR/AR*F ELECTRONIC BLOWER TIME DELAY RELAY..63
s-17 CHECKING COMPRESSOR.............................................63
s-17a Resistance Test.............................................................63
S-17B Ground Test..................................................................64
S-17C Unloader Test Procedure..............................................64
S-18D Operaon Test..............................................................65
S-18E CHECKING 3-PHASE SCROLL COMPRESSOR ROTATION 65
S-18 Tesng crankcase heater (Oponal Item).....................64
S-21 CHECKING REVERSING VALVE AND SOLENOID.............66
S-24 TESTING DEFROST CONTROL........................................66
S-25 TESTING DEFROST THERMOSTAT..................................66
S-50 CHECKING HEATER LIMIT CONTROL(S).........................66
S-52 CHECKING HEATER ELEMENTS......................................66
S-60 ELECTRIC HEATER (OPTIONAL ITEM)............................67
S-61A CHECKING HEATER LIMIT CONTROL(S).........................67
S-61B CHECKING HEATER FUSE LINK
(OPTIONAL ELECTRIC HEATERS)....................................68
S-62 CHECKING HEATER ELEMENTS......................................68
S-100 REFRIGERATION REPAIR PRACTICE...............................68
S-101 leak tesng (nitrogen or nitrogen-traced)....................69
S-102 EVACUATION.................................................................69
S-103 CHARGING....................................................................70
S-105B THERMOSTATIC EXPANSION VALVE..............................70
S-106 OVERFEEDING...............................................................71
S-107 UNDERFEEDING............................................................71
S-108 SUPERHEAT....................................................................71
S-109 CHECKING SUBCOOLING...............................................72
S-109a TWO SPEED APPLICATION.............................................72
S-110 Checking expansion valve operaon............................72
S-111 FIXED ORIFICE RESTRICTor DEVICES..............................72
S-112 CHECKING RESTRICTED LIQUID LINE............................75
S-113 OVERCHARGE OF REFRIGERANT...................................75
S-114 NON-CONDENSABLES...................................................74
S-115 COMPRESSOR BURNOUT..............................................74
S-201 cleaning aluminum coils...............................................76
S-202 duct stac pressures and/or stac pressure
drop across coils...........................................................76
S-203 SINGLE PIECE AIR HANDLER EXTERNAL STATIC.............76
S-203A TWO PIECE AIR HANDLER EXTERNAL STATIC................77
S-204 COIL STATIC PRESSURE DROP........................................76
TABLE OF CONTENTS
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.