Mitsubishi Electric SRK100VNPZJX, Technical Manual

Page: 428 / 509

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E1
Remote controller
communication circuit error
– –
Keeps flashing Stays OFF
1. Applicable model
5. Troubleshooting
All models
Diagnosis Countermeasure
Is it possible to
reset normally by the
power reset?
YES
Note (2) Does the remote controller still display “ ” even
after 3 minutes?
WAIT
NO
NO
YES
YES
Is DC10V or
higher detected at remote controller connection
terminals?
Is DC10V or higher
detected on remote controller wires if
the remote controller is
removed?
NO
NO
YES
YES
YES
Is DC10V or
higher detected at interface kit connection
terminals?
Is DC10V or higher
detected on connecting wires if
the interface kit is
removed?
Are wires
connected properly between the
indoor/outdoor units?
NO
NO
Malfunction by noise
Check peripheral
environment.
Defective remote controller
Defective remote controller
Defective interface kit
Defective interface kit
Defective connecting wire.
Defective remote controller
wire (Short-circuit, etc.)
Defective indoor control
PCB
➞
Replace.
2. Error detection method
When normal communication
between the remote controller
and the indoor unit is
interrupted for more than 2
minutes. (Detectable only with
the remote controller)
3. Condition of Error displayed
Same as above
4. Presumable cause
• Defective communication
circuit between remote
controller-indoor unit
• Noise
• Defective remote controller
• Faulty indoor control PCB
• Defective interface kit
Note:
If the indoor unit cannot communicate normally with the remote controller for 180 seconds, the indoor unit PCB starts to
reset automatically.
Error code
Remote controller:
Indoor
display
RUN light TIMER light
Green LED Red LED
Outdoor
control PCB
Content
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'12 • PAC-T-174