Service manual

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8. The phenomena in case of connecting error

INDOOR UNIT

Connector Type

Condition

Open and connecting error

Open

Short between terminals

(③ and ④) of ROOM-TH.

Short between terminals

(① and ②) of PIPE-TH.

Short between terminals

• The same as the phenomenon of Outdoor Unit.

• The up/down vane does not operate.

• The up/down vane does not smoothly operate.

• It does not operate with a remote controller.

• The operation indicator blinks once

(on for 0.5 second, off for 3 seconds).

• The compressor operates continuously regardless

of the setting temperature and the variation of room

temperature.

• The operation indicator blinks once

(on for 0.5 second, off for 3 seconds)

• Continuous operation

• The operation indicator blinks once.

• The compressor and the outdoor fan stop.

• The indoor fan speed is low.

• The indoor fan does not operate.

• The operation indicator of Indoor unit blinks 8 times.

CN-DC/DC

CN-MOTOR

CN-UP/DOWN

CN-DISP

CN-TH

① Blue

② Black

③ Brown

④ Red

Phenomena

①②③④⑤

On for 0.5 second

Off for 3 seconds