Mitsubishi Heavy Industries SRK25GZ-L1 Handbook page 924

FDC-HKX
Error display : e33
6
Indoor unit
Red LED Stays OFF
Green LED Keeps flashing
Note (1) Single flashing of outdoor unit LED indicates CM1 and double flashing indicates CM
Is AC 380V or 415V de-
tected between L and L
1
phases, and between L
2
and L phases at second-
3
ary side of 52C?
YES
(1)
Is there overcurrent
on compressor?
NO
Defective outdoor unit
PCB Replace.
(Defective CT input circuit)
e34
Error display :
7
Indoor unit
Red LED Stays OFF
Green LED Keeps flashing
Note (1) Single flashing of outdoor unit LED indicates CM1 and double flashing indicates CM
52C secondary side L
phase open?
Defective outdoor unit PCB
Replacement
(Defective CT circuit)
e36
Error display :
8
Indoor unit
Red LED Stays OFF
Green LED Keeps flashing
Note (1) Single flashing of outdoor unit LED indicates Th
Is the
discharge gas ther-
mistror characteristics
normal?
NO
Discharge pipe thermis-
tor replacement
Is the unit
normalized
NO
Defective outdoor unit
PCB Replacement
(Defective discharge gas
thermistor input circuit)
922
[Or overcurrent error (CM
Red LED
Green LED
3 NO
Open L or L
1
• Is power supply voltage adequate (is
not too low)?
• Are power supply wires adequate (are
YES
not too thin)?
• Is model setting adequate (setting of J
~ J )?
4
• Is there overload?
• Is compressor locked(CM
[Open phase at L phase of 52C1, 52C2 secondary side (CM
3
Outdoor unit
Red LED
Green LED
YES
3 Repair
NO
(2)
[Discharge temperature error]
Outdoor unit
Red LED
Green LED
-1 and double flashing indicates Th
0
Discharge gas
Check the unit side.
temperature error?
YES
• Insufficient refrigerant
(At cooling/heating
operation)
• Is it the oveload operation?
Operable
90ºC 130ºC
Discharge pipe temp.
), motor lock (CM )]
2 1
Outdoor unit
1 time flash (1)
Keeps flashing
.
2
• Defective 52C
• Broken wire on L
phase
phase between 52C ~ CM or
2
TB1 ~ 52C
Inspect the unit side.
• During cooling: Is FM
• During heating: Is FM
• Is there overcharge?
• Are adequate spaces secured for indoor or
2
outdoor units?
• Is there short circuit on indoor or outdoor
unit?
)?
• Defective compressor
1
Note (1) Measure the current value for confimation.
Confirm that there is no mistake in the setting of J
the outdoor unit PCB.
(1)
1 time flash
Keeps flashing
.
2
Notes (1) When voltage is detected at 52C primary side but not at the
secondary side, check also 52C (broken coil, poor contact).
(2) When voltage is detected at 52C primary side L
there is no error at 52C, the outdoor unit PCB (defective
52X
01
thermostat circuit) is defective.
(1)
1 time flash
Keeps flashing
-2.
0
Charge the refrigerant (measure)
Error stop
or L
1 2
running?
0
running?
1
Is service valve (gas side)
opened fully?
Is filter clogged?
Replace.
, CM )]
1 2
circuit or 52X ) or indoor unit PCB (defective
01
Check the unit side.
• During cooling: Is FM
operating?
0
• During heating: Is FM
operating?
1
Are service valves (both liquid,
gas) fully opened during both
cooling and heating.
• Is the installation space of indoor/
outdoor unit adequate?
• Is there any short circuit air flow
for indoor/outdoor units?
~ J on
2 4
phase and
3