Mitsubishi SUZ-KA35VA - Page 63

63
Once
3 times
4 times
Lighting
Goes out
Goes out
Goes out
Lighting
IPM protection
Lock protection
Fin temperature overheat
protection
P.C.boad temperature
overheat protection
Discharge temperature
overheat protection
HPS protection
High pressure protection
(Overheat protection)
Low discharge
temperature protection
Outdoor fan protection
Outdoor power system
Overcurrent protection
Fin temperature/P.C.
board temperature
overheat
Refrigerant system
High pressure
protection
Low discharge
temperature
Outdoor fan
Outdoor power
system
Outdoor LED indication
LED1 LED2
Abnormal point
(Failure mode)
Details of abnormal Detecting method Check point
When overcurrent is detected after
30 seconds of compressor start-up.
When overcurrent is detected within
30 seconds after the compressor
gets started.
When the fin temperature exceeds 87
during operation.
When the P.C. board temperature
exceeds 70 during operation.
When discharge temperature exceeds
116.
When high-pressure is detected with the
high-pressure switch (HPS) during operation.
When the indoor coil thermistor (TH5)
exceeds 70 in HEAT mode.
When the outdoor heat exchanger thermistor
exceeds 70 in COOL mode.
When the frequency of the compressor
is kept 80Hz or more and discharge
temperature is kept under 39 for
more than 20 minutes.
When outdoor fan has stopped within
30 seconds 3 times in a row after
outdoor fan start -up,unit stops.
When IPM protection stop or lock
protection stop is continuously
performed 3 times within 1 minute after
the compressor get started, or when
converter protection stop or bus-bar
voltage protection stop is continuously
performed 3 times within 3 minutes
after start-up.
• Check the connection of the
compressor connecting wire.
• Check the inverter/ compressor.
• Check the stop valve.
• Check around outdoor unit.
• Check outdoor unit air passage.
• Check the outdoor fan motor.
• Check refrigerant circuit and
refrigerant amount.
• Check the LEV.
• Check the outdoor thermistors.
• Check refrigerant circuit and
refrigerant amount.
• Check the stop valve.
• Check refrigerant circuit and
refrigerant amount.
• Check the LEV.
• Check the outdoor fan motor.
• Reconnect compressor connector.
• Check the inverter/ compressor.
• Check the stop valve.
• Check the PAM module.
OC322G