Installation Manual - A-VMH18DU,28TU,36QU,48PU-1
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8
Automatic Wiring/Piping Correction Function
Function of Automatic Wiring/Piping Correction
11
More recent models now feature automatic correction of wiring/piping errors. Press the "check
switch" on the outdoor unit PCB board for 5 seconds until the LED displays "CE”, indicat
ing
that this
function is working, Approximately 5-10 minutes after the switch is pressed, the "CE" disappears,
meaning that the wiring/piping error is corrected and all wiring/piping is properly connected.
How To Activate This Function
1.
Check that outside temperature is above
41 F
.(This function does not
work when outside temperature is not above
41 F.
)
2.
Check that the stop valves of the liquid pipe and gas pipe are open.
3.
Turn on the breaker and wait at least 2 minutes.
4.
Press the check switch on the outdoor PCB board unit LED display "
C E
".
Correct
Terminal
block
Liquid/
Gas pipe
Outdoor unit
Indoor unit B
Indoor unit A
B
A
B
A
Incorrect wiring
Terminal
block
Liquid/
Gas pipe
Outdoor unit
Indoor unit B
Indoor unit A
B
A
B
A
Incorrect wiring
Terminal
block
Liquid/
Gas pipe
Outdoor unit
Indoor unit B
Indoor unit A
B
A
B
A
Check switch
LED display