Mitsubishi Heavy Industries SRK25GZ-L1 Handbook page 909

3) Display sequence of error, inspection display lamp
a) One kind error
Display corresponding to the error is shown.
b) More than one errors.
Section
Error code of remote controller
Inspection LED (red) of indoor unit PCB
Inspection LED (red) of outdoor unit PCB
c) Timing of error detection
●
Indoor unit side.
Error detail
Transmission error of remote controller
indoor unit
CPU is out of control
Transmission error between indoor/outdoor
units
Broken wire of heat exchanger thermistor
Broken wire of indoor unit return air
thermistor
Drain error (float switch motion)
●
Outdoor unit side.
Error detail
CM1 motor lock protection
Compressor (CM2) over-current protection
52C1, or 52C2 secondary side L3-phase
wiring is open.
Discharge temperature abnormality
Broken wire of heat exchanger thermister
Broken wire of outdoor temperature
thermistor
Broken wire of discharge thermistor
High pressure cut
Power transistor overheat
Current cut
Excessive number of indoor and outdoor
units
Transmission error between inverter and
outdoor unit PCB
• Displays the error of higher priority (When plural errors are persisting)
E¡ E¡º E¡¡ E™ E£
• Displays the present errors.
(When a new error has occurred after the former error was reset.)
Error code
When the transmission error continuously for 2 min.
E¡
Resetting was performed at the rate of 1 time per second. An abnormal stop
occured 32-sec time flash.
A check was made once every 20 second. An abnormal stop occured 7 time
E∞
running.
After a compressor ON command, this failure was detected for 5 second in
E§
the period of 2 minutes to 2 minutes and 20 seconds.
E¶
This failure was detected continuously for 5 seconds.
At the thermostat ON state, an abnormal stop occured immediately after the
float swicth operated.
- At a stop or the thermostat OFF state, the condensate motor was turned on
Eª
for 3 minutes after the float switch operated.
After that, an abnormal stop occurred when the float switch operated in 10
seconds.
Error code
When the compressor has been operating at 25 Hz and a current in excess of 10A
is detected for 0.5 continuous seconds.
• 5detectins in 60 minutes
• After compressor has stopped and current had not fallen below 2A for 10
E££
minutes.
When the L3 phase current on the secondary side of 52C2 exceeds the setting for
0.5 seconds continuously 2 times in 40 minutes.
When CM1 is on and there is L3-phase current of 0.5 A or less for 10 continuous seconds.
E£¢
When the CM2 L3-phase current is 2 A or less for 5 continuous sections after CM2 has
gone on.
A stop occurs when this abnormality occurs for 2 seconds running at 130°C.
After a stop for 3 minutes, an recovery is automatically made.
E£§
An abnormal stop occurs when this abnormality occurs twice for 60 minutes.
(The abnormal state is held for 45 minutes.)
E£¶
This failure is detected when it occurs for 5 seconds running in the period of 2
minutes to 2 minutes and 20 seconds with the compressor ON. An abnormal stop
E£•
occurs when this failure occurs 3 times for 40 minutes.
This failure is detected when it occurs for 5 seconds running in the period of 10
E£ª
minutes to 10 minutes and 20 seconds with the compressor ON. An abnormal
stop occurs when this failure occurs 3 times for 40 minutes.
E¢º
An abnormal stop occurs when this abnormality occurs 2 times for 40 minutes.
A stop occurs at 118°C or more. After 3 minutes, a recovery was automatically
E¢¡
made at 100°C or less. Abnormal stop occurs when this abnormality occurs 2
times for 2 hours.
E¢™
An abnormal stop occurs when this abnormality occurs 4 times for 15 minutes.
This error is detected when the number of connectable units is set over the
E¢£
specified value at remote control addressing.
When an transmission error continues for 10 seconds, the 52C is turned off. With
E¢∞
a delay of 3 minutes, a recovery is automatically made. An abnormal stop occurs
when this errors occurs 4 times for 15 minutes.
Display section
E∞ E¶ Eª E¡™
···········
Timing of error detection
Timing of error detection
FDC-HKX
E¢§
907