Function Of Automatic Wiring/Piping Correction - Pioneer YN-M Series Installation Manual

Function of Automatic Wiring/Piping Correction

Automatic Wiring/Piping Correction Function
The newest 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", indicating 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 that all wiring/piping is properly connected.
How To Activate the Function
1. Check that the outside temperature is above 5℃.
(This function does not work when outside temperature is not above 5℃)
2. Check that the service 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 "CE".
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Correct wiring
Terminal
block
Liquid/
Gas pipe
Outdoor unit
Incorrect wiring
Terminal
block
Liquid/
Gas pipe
Outdoor unit
Incorrect wiring
Terminal
block
Liquid/
Gas pipe
Outdoor unit
Check switch
LED display
B
A
Indoor unit B
B
A
Indoor unit A
B
A
Indoor unit B
B
A
Indoor unit A
B
A
Indoor unit B
B
A
Indoor unit A
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