Overvoltage Error; Undervoltage Error - Mitsubishi Electric PUZ-HA24NHA1 Service Manual

Split-type, heat pump air conditioners
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[Fan control state] (Request code: "53 ")
Data display
0
0
Display
Correction value
- (minus)
– 1
0
0
1
+1
+2
2
[Actuator output state] (Request code : "54")
Data display
0
0
Actuator output state
1
Display
SV1
Four-way valve
0
1
ON
2
3
ON
4
5
ON
6
7
ON
8
9
ON
A
b
ON
C
d
ON
E
F
ON
[Error content (U9)] (Request code : "55 ")
Data display
0
0
Error content
1
Overvoltage
Display
error
0
1
2
3
4
5
6
7
8
9
A
b
C
d
E
F
OCH750A
Fan step correction value by heatsink temperature overheat prevention control
Fan step correction value by cool condensation temperature overheat prevention control
Actuator output state 1
Actuator output state 2
Compressor
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
Error content 1
Error content 2
Undervoltage
L
-phase
1
error
open error
Actuator output state
Compressor is
Display
warming up
0
1
2
3
4
5
6
7
ON
ON
ON
ON
ON
ON
ON
ON
: Detected
Error content
Power synchronizing
Display
signal error
0
1
2
3
88
2
52C
SV2
ON
ON
ON
ON
ON
ON
ON
ON
: Detected
2
Converter Fo
PAM error
error
SS
ON
ON
ON
ON

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