DM-6
Monosplit “Wall” Personal Line Constant Speed - Section 6: Diagnostic & Maintenance
YES
NO
Turn on power supply.
Does “Running”
LED light up?
Check power supply.
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
Case 4: Compressor does not operate
Primary check
(1)
Is room temperature (
Tr
) higher than preset temperature (
Ts
), in Cooling operation?
(2)
Are crossover cables between Indoor Unit and Outdoor Unit connected properly?
Is it possible that
3-minutes’ protection
(compressor restart) is active?
Is it possible to detect
AC 220-240V on
compressor’s power
supply phases?
Wait for 3 minutes.
Is compressor’s
wiring OK?
Is condenser for
compressor OK?
Is overload relay OK?
Does compressor start?
Compressor is defective.
Is amount of R410A
refrigerant correct?
Does compressor
stop after a while?
Is compressor motor
winding OK?
Do R-T values of room
sensor (
Tr
) and heat exchanger
sensor (
TP1
) correspond to
values shown on the Table?
PCB is defective or
Indoor Unit’s CPU is
defective.
Room sensor (
Tr
) or
heat exchanger sensor
(
TP1
) is defective.
Replace room sensor
(
Tr
) or heat exchanger
sensor
(TP1
).
Replace the PCB.
Rewire or replace
defective cords.
Compressor is defective.
Compressor is defective.
Gas shortage (Gas leak).
Condenser is defective.
Overload relay is defective.
Replace compressor.
Replace compressor.
Replace condenser.
Replace overload relay.
Search for leakages.
Vacuum and charge.
Replace compressor.
Содержание HCND 261 G
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