Mitsubishi Heavy Industries SRK100VNXWZRF Service Manual page 86

Error code
Remote control: WAIT
1. Applicable model
Models FDC100VN(S)X-W,
100VN(S)A-W
2. Error detection method
3. Condition of error displayed
4. Presumable cause
• Faulty noise filter
• Faulty indoor unit control PCB
• Faulty outdoor unit control PCB
• Faulty fan motor
Note:
RUN light TIMER light
Indoor
display
– –
Green LED Red LED
Outdoor unit
control PCB
Keeps flashing 2-time flash
5. Troubleshooting
Diagnosis
Diagnosis for when the outdoor unit
main PCB LED is turned off
From previous
Shut down the breaker and back on
page
again the breaker 3 minutes later.
NO
Does it reset normally?
Is the outdoor
unit control power source fuse
(30A) blown?
To check method for inverter PCB before
replacment of blown power source fuse.
NO
Is AC220/240V or AC380/415V
detected at the noise filter
secondary side?
YES
Is DC255-310V detected at CNA2?
YES
Is fuse
〔250V, 2A〕 on the outdoor unit main
PCB blown?
NO
Is DC5V
detected on the outdoor unit main PCB (Between
- of CNV)?
YES
Is DC5V detected
if the connector of outdoor fan motor
is disconnected?
YES
Is DC5V detected
if the inverter power source connector (CNI2)
is disconnected?
85
-
Communication error at
Content
initial operation (2/3)
(Models FDC100VN(S)X-W,100VN(S)A-W only)
YES
Note (1) 1phase model only
(1)
YES
To next page
NO
NO
YES
NO
NO
NO
YES
-
'22 • PAC-SM-422
Countermeasure
Normal (Malfunction by
noise)
Replace noise filter.
Check connection of diode
stack and electrolytic
capacitor by refering main
electrical circuit diagram.
Defective outdoor unit
control PCB➞Replace.
Defective outdoor unit
main PCB➞Replace.
Defective outdoor fan
motor
Defective outdoor unit
control PCB➞Replace.
Defective outdoor unit
control PCB➞Replace.