Specifications

877
FDC-HKX
Section Display section
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Error code of remote controller
Inspection LED (red) of indoor unit PCB
Inspection LED (red) of outdoor unit PCB
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• Displays the error of higher priority (When plural errors are persisting)
• Displays the present errors.
(When a new error has occurred after the former error was reset.)
Error detail Error code
Error detail Error code
Timing of error detection
Timing of error detection
CPU is out of control
When the transmission error continuously for 2 min.
This failure was detected continuously for 5 seconds.
An abnormal stop occurs when this abnormality occurs 2 times for 40 minutes.
An abnormal stop occurs when this abnormality occurs 4 times for 15 minutes.
Broken wire of heat exchanger thermistor
Drain error (float switch motion)
52C secondary side T-phase wiring is open.
Discharge temperature abnormality
Broken wire of heat exchanger thermister
Broken wire of discharge thermistor
High pressure cut
Power transistor overheat
Current cut
Broken wire of outdoor temperature
thermistor
Excessive number of indoor and outdoor
units
Transmission error between inverter and
outdoor unit PCB
Transmission error of remote controller
indoor unit
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
running.
After a compressor ON command, this failure was detected for 5 second in
the period of 2 minutes to 2 minutes and 20 seconds.
An abnormal stop occurs when the T-phase voltage is 1.5 to 2A for 4 seconds
running (Detected with 52C ON only)
This error is detected when the number of connectable units is set over the
specified value at remote control addressing.
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.
An abnormal stop occurs when this abnormality occurs twice for 60 minutes.
(The abnormal state is held for 45 minutes.)
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
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
minutes to 10 minutes and 20 seconds with the compressor ON. An abnormal
stop occurs when this failure occurs 3 times for 40 minutes.
A stop occurs at 118°C or more. After 3 minutes, a recovery was automatically
made at 100°C or less. Abnormal stop occurs when this abnormality occurs 2
times for 2 hours.
When an transmission error continues for 10 seconds, the 52C is turned off. With
a delay of 3 minutes, a recovery is automatically made. An abnormal stop occurs
when this errors occurs 4 times for 15 minutes.
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
for 3 minutes after the float switch operated.
After that, an abnormal stop occurred when the float switch operated in 10
seconds.
Transmission error between indoor/outdoor
units
Broken wire of indoor unit return air
thermistor
3) Display sequence of error, inspection display lamp
a) One kind error
Display corresponding to the error is shown.
b) More than one errors.
c) Timing of error detection
● Indoor unit side.
● Outdoor unit side.