Mitsubishi Heavy Industries SRK100VNXWZRF Service Manual page 123

Error code
Indoor display
Remote control: E47
Outdoor unit
control PCB
1. Applicable model
Model FDC100VNA-W
2. Error detection method
In order to avoid an unexpected
trouble, if the protective circuit
defect unexpected voltage,
current and movement of the
power element, it makes the
compressor stopping.
3. Condition of error displayed
• If the anomaly occurs,
it makes the compressor
stopping.
• After 3-minute delay, the
compressor restarts
f this anomaly occurs 4
times within 30minutes or
continues for 15minutes
contin ously.
4. Presumable cause
• Defective control PCB
• Defective PCB
Note:
RUN light
TIMER light
ON
5-time flash
Red LED
Green LED
Keeps flashing 1-time flash
5. Troubleshooting
Diagnosis
Is the
power source
voltage OK?
YES
Are wires
connected properly
between the reactor PCB
(P 7) and the control
PCB (P B1) ?
YES
Change the control PCB (P B1)
Does it become nomal?
-
122
-
Content
PCB A/F module anomaly
(Model FDC100VNA-W only)
NO
NO
NO
-
-
'22 • PAC-SM-422
Countermeasure
Check power source.
Correct wires.
Change the reactor PCB
(P B7) and the connection
wire between the reactor
PCB (P B7) and the
control PCB (P B1).