Mitsubishi Heavy Industries SRK25ZJP-S User Manual

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40
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'10 • SRK-T-100
(5) Self-diagnosis table
When this air conditioner performs an emergency stop, the reason why the emergency stop occurred is displayed by the ashing of
display lights. If the air conditioner is operated using the remote controller 3 minutes or more after the emergency stop, the trouble
display stops and the air conditioner resumes operation.
(1)
Notes (1) The air conditioner cannot be restarted using the remote controller for 3 minutes after operation stops.
When a heat exchanger sensor wire disconnection is detected while operation is
stopped. (If a temperature of –20ºC or lower is detected for 15 seconds, it is
judged that the wire is disconnected.)
(Not displayed during operation.)
When a room temperature sensor wire disconnection is detected while operation
is stopped. (If a temperature of –20ºC or lower is detected for 15 seconds, it is
judged that the wire is disconnected.)
(Not displayed during operation.)
• Broken heat exchanger sensor
wire, poor connector
connection
• Indoor PCB is faulty
• Broken room temperature
sensor wire, poor connector
connection
• Indoor PCB is faulty
When conditions for turning the indoor unit’s fan motor on exist during air
conditioner operation, an indoor unit fan motor speed of 300 rpm or lower is
measured for 30 seconds or longer. (The air conditioner stops.)
• Defective fan motor, poor
connector connection
ON
1 time
flash
ON
2 time
flash
ON
6 time
flash
When an outdoor temperature sensor wire disconnection is detected while
operation is stopped. (If a temperature of –40ºC or lower is detected for 15
seconds, it is judged that the wire is disconnected.)
(The compressor is stopped.)
• Broken outdoor air temp.
sensor wire, poor connector
connection
• Outdoor PCB is faulty
1 time
flash
Keeps
flashing
When a sensor wire disconnection is detected while operation is stopped.
(If a temperature of –50ºC or lower is detected for 15 seconds, it is judged that
the wire is disconnected.)
(The compressor is stopped.)
• Broken heat exchanger sensor
wire, poor connector
connection
• Outdoor PCB is faulty
2 time
flash
Keeps
flashing
When a compressor discharge pipe sensor wire disconnection is detected for
15 seconds or longer (less than 7ºC) after the compressor command speed has
continued at 0 rps or higher for 9 minutes.
(The compressor is stopped.)
• Broken discharge pipe sensor
wire, poor connector
connection
• Outdoor PCB is faulty
4 time
flash
Keeps
flashing
The inverter output current (compressor motor current) exceeds the set value
during compressor start.
(The air conditioner stops.)
• Compressor locking, open
phase on compressor output,
shortcircuit on power
transistor, closed service valve
1 time
flash
ON
When there is an emergency stop caused by trouble in the outdoor unit, or the
input current value is found to be lower than the set value.
(The air conditioner stops.)
When there is an emergency stop caused by trouble in the outdoor unit, or the
input current value is found to be lower than the set value continuously for 3
minutes or longer.
(The compressor is stopped.)
• Broken compressor wire
• Compressor blockage
2 time
flash
ON
When the value of the discharge pipe sensor exceeds the set value.
(The air conditioner stops.)
• Gas shortage, defective
discharge pipe sensor, closed
service valve
ON
5 time
flash
6 time
flash
ON
When there is no signal between the indoor PCB and outdoor PCB for 10
seconds or longer (when the power is turned on), or when there is no signal for
1 minute 55 seconds or longer (during operation)(the compressor is stopped).
• Defective power supply,
Broken signal wire, defective
indoor/outdoor PCB
If the compressor motor’s magnetic pole positions cannot be correctly detected
when the compressor star ts.
(The air conditioner stops.)
• Defective compressor
• Open phase on compressor
• Defective outdoor PCB
2 time
flash
2 time
flash
ON
5 time
flash
When the outdoor unit’s fan motor sped continues for 30 seconds or longer at
75 rpm or lower. (3 times) (The air conditioner stops.)
• Defective fan motor, poor
connector connection
7 time
flash
ON
Indoor unit display panel
Cause Display (flashing) condition
RUN
light
TIMER
light
When the compressor command speed is lower than the set value and the current
safe has operated. (The compressor is stopped.)
• Overload operation
• Overcharge
• Compressor locking
3 time
flash
When the wrong voltage connected for the power supply.
When the outdoor PCB is faulty.
• Defective active filter
ON
• Broken power transistor
Heat exchanger
sensor error
Room
temperature
sensor error
Indoor fan
motor error
Outdoor air
temperature
sensor error
Outdoor heat
exchanger
sensor error
Discharge pipe
sensor error
Current Cut
Trouble of
outdoor unit
Over heat of
compressor
Error of signal
transmission
Rotor lock
Outdoor fan
motor error
Description
of trouble
Current safe
stop
Active filter
voltage error
Power transistor
error
4 time
flash
ON

Mitsubishi Heavy Industries SRK25ZJP-S Specifications

General

Brand	Mitsubishi Heavy Industries
Model	SRK25ZJP-S
Category	Air Conditioner
Language	English