Mitsubishi Heavy Industries SRK100VNXPZSX Technical Manual page 122

Error code
Remote control: WAIT
1. Applicable model
All models
2. Error detection method
3. Condition of error displayed
4. Presumable cause
• Faulty indoor unit control PCB
• Defective remote control
• Broken remote control wire
• Faulty outdoor unit control PCB
• Broken connection wires
Note:
RUN light TIMER light
Indoor
display
– –
Green LED Red LED
Outdoor unit
control PCB
Keeps flashing 2-time flash
5. Troubleshooting
Diagnosis
" WA IT " is still displayed on the
remote control LED 2 minutes after
power ON.
YES
Is the outdoor
unit control green LED
flashing?
YES
Is the outdoor unit
control red LED flashing
twice?
YES
Are wires
connected properly between indoor/
outdoor units?
YES
Is approx.
DC20V detected between -Ž on
the outdoor unit terminal
block?
YES
Is approx.
DC20V detected between -Ž on
the indoor unit terminal
block?
121
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Content
Communication error at
initial operation (1/3)
To next page
NO
NO
NO
NO
NO
YES
-
'17 • PAC-T-257
Countermeasure
Defective indoor unit control PCB ➞
Replace.
Defective remote control ➞ Replace.
Broken remote control wire Y ➞
Replace.
Correct connection wires
between indoor and
outdoor units.
Defective outdoor unit
control PCB ➞ Replace.
Defective connection wire
(Broken)
Noise
Defective indoor unit control
PCB ➞ Replace.