Balcar R410A service manual 173, Check the draining

6 CABLE CONNECTION

1.Loosen the mounting screws (2 positions) of the cover of the electric parts box, and then remove the cover.

2.In the drain up kit, connect the connector (Blue 3P) for drain pump to P.C. board CN68 (Blue 3P) of the indoor unit, and the connector (Red 3P) for float switch to P.C. board CN34 (Red 3P) of the indoor unit respectively.

In this time, remove 3P connector (Red 3P) for short-circuit of CN34 (Red 3P).

	CN68 (Blue 3P)
Electric parts box 2 screws	P.C. board
	CN34 (Red 3P)
	(Connect while removing 3P connector for short-circuit.)

–	7 TEST RUN
173 –
	Check the draining

In the test run, check that water drain is properly performed and water does not leak from the connecting part of the pipes.

Be sure to check draining also when installed in heating period.

Using a pitcher or hose, pour water (1200cc) into the discharge port before installation of the ceiling panel.

Pour water gradually so that water does not spread on the motor of the drain pump.

•After the electric work has finished, pour water during COOL mode operation.

•If the electric work has not yet finished, pull out the float switch connector (CN34 : Red) from the electric

parts box, and check draining by plugging the single phase 220–240V power to the terminal blocks and .

If doing so, the drain pump motor operates.

•Test water drain while checking the operation sound of the drain pump motor.

(If the operation sound changes from continuous sound to intermittent sound, water is normally drained.)

After the check, the drain pump motor runs, connecting the float switch connector.

(In case of check by pulling out the float switch connector, be sure to return the connector to the original position.)

		Single phase 220–240V
	1	2
		White
CN34		Red
(RED)	Black

Pull out connector CN34 (Red) from P.C. board. Black

Pump for oil-heater

Bucket

TCB-DP22CE