4-24
4-25
Trouble shooting
4-3-6. Fan coil unit Fan operation error
1. How to judge
1) This occurs when the RPM value in the pan motor of the PID control method does not FEEDBACK to MICOM
2. How to check
Yes
Restart after connecting
No
Restart after connecting the HALL IC
connector
Is the connecting terminal separated?
Yes
No
No
Is the FAN motor operation capacitor a PCB
detachable type?
Replace PCB
Is the HALL IC connector connected?
Yes
Error number
Fan coil unit
display
Duct, cassette (1‑Way/2‑Way/
Mini 4‑Way)
4‑Way cassette type
Wall mount type
Circular cassette type
LED Indication
or
or
r u n /
stop
Defrost Timer
Clean
Filter
18°C
21°C
Timer
24°C
27°C
Ice
Blue
Yellow
Green
Blue
Red
1‑Way
blue
Yellow
green
2‑Way
Green
Red
◑
◑
◑
◑
◑
◑
◑
◑
◑
◑
◑
◑
◑
◑
◑
◑
×
◑
Criteria
∙ Refer to the judgment method below
Cause of
problem
∙ Number ∙x x x fan coil unit fan motor operation error