Important Information - Daikin M Series Service And Troubleshooting

IMPORTANT INFORMATION

REFRIGERANT CHARGE CHECK ............................. 28
CHECKING SUPERHEAT ........................................... 28
CHECKING SUBCOOLING ......................................... 28
CHECKING COMPRESSOR EFFICIENCY ................ 29
FIXED ORIFICE RESTRICTION DEVICES ................ 32
CHECKING EQUALIZATION TIME ............................. 32
CHECKING RESTRICTED LIQUID LINE .................... 32
REFRIGERANT OVERCHARGE ............................... 32
NON-CONDENSABLES .............................................. 32
COMPRESSOR BURNOUT ........................................ 33
SUCTION LINE DRIER CLEAN-UP METHOD ........... 33
REVERSING VALVE REPLACEMENT ....................... 33
CHECKING EXTERNAL STATIC PRESSURE ............ 34
ADJUSTING AIRFLOW ............................................... 34
CHECKING TEMPERATURE RISE ............................ 34
TESTING PRIMARY LIMIT CONTROL ....................... 35
TESTING AUXILIARY LIMIT ...................................... 35
CHECKING FLAME ROLLOUT SWITCH ................... 36
TESTING INDUCER MOTOR ..................................... 37
TESTING GAS VALVE ................................................ 37
CHECKING MAIN BURNERS ..................................... 38
CHECKING ORIFICES ................................................ 38
CHECKING GAS PRESSURE .................................... 38
GAS INLET PRESSURE CHECK ............................... 39
CHECKING FOR DELAYED IGNITION ...................... 40
CHECKING FOR FLASHBACK ................................... 40
CHECKING PRESSURE CONTROL .......................... 40
PRESSURE SWITCH OPERATION ............................ 40
HIGH ALTITUDE APPLICATION ................................. 41
TESTING IGNITION CONTROL MODULE ................ 41
CHECKING FLAME SENSOR .................................... 43
TROUBLESHOOTING ................................................... 46
WIRING DIAGRAMS ....................................................... 48
(Not a technical assistance line for dealers.) Your telephone company will bill you for the call.
IMPORTANT NOTICES FOR CONSUMERS
AND SERVICERS
RECOGNIZE SAFETY SYMBOLS, WORDS AND
LABELS
TO PREVENT THE RISK OF PROPERTY DAMAGE, PERSONAL
INJURY, OR DEATH, DO NOT STORE COMBUSTIBLE MATERIALS
OR USE GASOLINE OR OTHER FLAMMABLE LIQUIDS OR
VAPORS IN THE VICINITY OF THIS APPLIANCE.
HIGH VOLTAGE
DISCONNECT ALL POWER BEFORE SERVICING
OR INSTALLING THIS UNIT. MULTIPLE POWER
SOURCES MAY BE PRESENT. FAILURE TO DO SO
MAY CAUSE PROPERTY DAMAGE, PERSONAL
INJURY OR DEATH.
THIS UNIT SHOULD NOT BE CONNECTED TO, OR USID IN
CONJUNCTION WITH, ANY DEVICES THAT ARE NOT DESIGN
CERTIFIED FOR USE WITH THIS UNIT OR HAVE NOT BEEN
TESTED AND APPROVED BY THE MANUFACTURER. SERIOUS
PROPERTY DAMAGE OR PERSONAL INJURY, REDUCED UNIT
PERFORMANCE AND/OR HAZARDOUS CONDITOINS MAY RESULT
FROM THE USE OF DEVICES THAT HAVE NOT BEEN APPROVED
OR CERTIFIED BY THE MANUFACTURER.
OUTSIDE THE U.S., call 1-713-861-2500.
WARNING
WARNING
WARNING
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