Mitsubishi Electric PEY Series Service Manual page 29

TROUBLESHOOTING
• Refer to the following tables for details on the check codes.
[Output pattern A]
Beeper sounds Beep
OPERATION
INDICATOR
lamp flash
Off
pattern
Approx. 2.5 sec.
Self-check
starts
(Start signal
Number of flashes/beeps in pattern indicates the check
received)
code in the following table (i.e., n=5 for "P5")
[Output pattern B]
Beeper sounds Beep
OPERATION
INDICATOR
lamp flash
Off
pattern
Approx. 2.5 sec.
Self-check
starts
(Start signal
received)
[Output pattern A] Errors detected by indoor unit
Wireless remote controller Wired remote controller
Beeper sounds/OPERATION
INDICATOR lamp flashes
1 Check code
(Number of times)
1 P1
P2
2
P9
3 E6,E7
4 P4
P5
5
PA
6 P6
7 EE
8 P8
9 E4, E5
10 –
11 –
12 Fb (FB) *3
13 PL
– E0, E3
– E1, E2
[Output pattern B] Errors detected by unit other than indoor unit (outdoor unit, etc.)
Wireless remote Wired remote
controller
Beeper sounds/OPERATION
INDICATOR lamp flashes
1 Check code
(Number of times)
1 E9
2 UP
3 U3,U4
4 UF
5 U2
6 U1,Ud (UD) *3
7 U5
8 U8
9 U6
10 U7
11 U9,UH
12 –
13 –
14 Others
*1 If the beeper does not sound again after the initial 2 beeps to confirm the self-check start signal was received and the OPERATION
INDICATOR lamp does not come on, there are no error records.
*2 If the beeper sounds 3 times continuously "beep, beep, beep (0.4 + 0.4 + 0.4 sec.)" after the initial 2 beeps to confirm the self-check start
signal was received, the specified refrigerant address is incorrect.
*3 The check code in the parenthesis indicates PAR-30MAA model.
HWE1305A
Beep Beep Beep Beep
1 2 3 n
st nd rd
On On On
On
0.5 sec. 0.5 sec. 0.5 sec. 0.5 sec.
Beep Beep Beep
1 st 2
On On On
Approx. 3 sec. 0.5 sec. 0.5 sec.
Number of flashes/beeps in pattern indicates the check
code in the following table (i.e., n=5 for "U2")
Intake sensor error
Pipe (TH2) sensor error
Pipe (TH5) sensor error
Indoor/outdoor unit communication error
Float switch connector open
Drain pump error(due to water leakage abnormality)
Forced compressor stop
Freezing/Overheating protection operation
Communication error between indoor and outdoor units
Pipe temperature error
Remote controller signal receiving error
–
–
Indoor unit control system error (memory error, etc.)
Refrigerant circuit abnormal
Remote controller transmission error
Remote controller control board error
controller
Indoor/outdoor unit communication error
(Transmitting error) (Outdoor unit)
Compressor overcurrent interruption
Open/short of outdoor unit thermistors
Compressor overcurrent interruption (When compressor locked)
Abnormal high discharging temperature/49C operated/insufficient
refrigerant
Abnormal high pressure (63H operated)/Overheating protection operation
Abnormal temperature of heat sink
Outdoor unit fan protection stop
Compressor overcurrent interruption/Abnormal of power module
Abnormality of superheat due to low discharge temperature
Abnormality such as overvoltage or voltage shortage and abnormal
synchronous signal to main circuit/Current sensor error
–
–
Other errors (Refer to the technical manual for the outdoor unit.)
Beep Beep
1 2 · · · Repeated
th st nd
Off On On
Approx. 2.5 sec. 0.5 sec. 0.5 sec.
Number of flashes/beeps in pattern indicates
the check code in the following table
Beep
nd 3 rd n th
On On Off
0.5 sec. 0.5 sec. Approx. 2.5 sec.
Symptom
Symptom
29
Beep Beep
1 2 · · · Repeated
st nd
On On On
Approx. 3 sec. 0.5 sec. 0.5 sec.
Number of flashes/beeps in pattern indicates
the check code in the following table
Remark
Remark
For details, check
the LED display of
the outdoor
controller board.
As for outdoor unit,
refer to outdoor
unit's service
manual.
–