Ramsond CHDZ-24-12-12, Installation Manual

Page: 23 / 40

Automatic Wiring/Piping Correction Function
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Page 23
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Function of Automatic Wiring/Piping Correction
11
The new product is able to automatically correct a wiring/piping error. Press the "check switch" on the
outdoor unit PCB board for 5 seconds until the LED display shows "CE." This means the function is
working. Approximately 5-10 minutes after the switch is pressed, "CE" will disappear, the wiring/piping
error will be corrected, and the wiring/piping will be properly connected.
How to Activate This Function
1. Check that the outside temperature is above 41° F (5° C).
(This fuction does not work when the outside temperature is not above 41° F (5° C))
2. Check that the stop valves on the liquid and gas pipes are open.
3. Turn on the breaker and wait at least 2 minutes.
4. Press the check switch on the outdoor PCB board until the LED display shows "CE."
Automatic Correction Function
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