125
Failure code
Outdoor
digital
display tube:
112-0, 1
Indoor wired
controller:
70
Indoor unit LED status
LED5 Failure description:
Compressor module radiator temp. too high
20 times
Outdoor unit LED status
LED1 LED2
Normal Normal
1. Model Failure diagnosis and troubleshooting
MRV 5-HR series
DiagnosisT roubleshooting
2. Abnormity detection method
◆
Check if the radiator is in
normal conditions;
◆
Check if the cooling fan is in
normal conditions;
◆
Check if the radiator sensor
is in normal conditions.
conditions
Raise failure alarm when
°C.
INV control board recovers
automatically when
°C.
4. Possible causes
◆
The module is insecurely
heat dissipation;
◆
The radiator sensor is
broken which results in high
detection temperature;
◆
The cooling fan fails to
operate;
◆
There is no 220V output
from the terminal of cooling fan
of PCB.
Check if t he cooling fan rotate s
and the sensor is normal
Check i f the module i s
secured a nd t he c oolin g
silica gel is even up
Check if has 117 failure
Compressor overload t o
check the cause of over
load
Secure t he m odule and paint
with radiating silica gel evenly.
Replace the power module.
Troubleshoot t he f an and P CB
terminal for 220V voltage output.
Y
Y
Y
N
N
N
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