Mitsubishi PU-5TJSA Service Manual download pdf (Page 27)

2-5 Test run

The unit starts the test run by pressing both the UP and DOWN buttons simultaneously for more than two seconds during

lamp ON or the unit OFF.

● The test run automatically stops in 2 hours.

● Set temperature is not displayed during test run.

● To cancel the test run, press the POWER ON/OFF button.

The units are set as follows by the factory.

1) Initial operation mode: FAN 3) Swing louver : OFF

2) Fan speed : LOW 4) Set temperature: 28°C

2-6 Emergency operation

When the remote controller or microprocessor malfunc-

tions and no other trouble exists, emergency operation

is available by setting the dipswitch on the indoor con-

troller board.

[Check items]

! Make sure the compressor and the fans are running

normally.

@ Locate the trouble with the self-doagnostic function. If

the self-diagonostic function indicates that the protec-

tion device (such as coil frost protection)is function-

ing, the sources must be removed before attempting

emergency operation.

Emergency operation ON/OFF is activated not with

the remote controller but with the circuit breaker.

[Emergency operation procedure]

! Cooling operation is available by setting the dipswitch

SW3 1 and 2 ON and 3 OFF on the indoor con-

troller board.

INDOOR CONTROLLER BOARD

SW3

TIMER

▲

2-7 Auto Restart function

Unit can be start / stop by turning the breaker ON / OFF.

! Cutting the JR06 on the indoor board.

Unit can be start / stop using a remote controller. Only If the unit was already being operated before power off, the unit resta

automatically as soon as power is back.

@ To start emergency operation, turn the outdoor sidecircuit breakerON first, and then the indoor side circuit breaker ON.

# During emergency operation, the indoor fan runs on HIGH speed, the compressor runs continuously, and the louver

stops.

When the drain pump is attached, it works in emergency operation.

$ Thermostat will not function.

% Do not use emergency cooling operation for more than 10 hours, as the indoor coil may freeze.

w If the self-diagnostic function shows a drain pump malfunction, do not attempt emergency operation, as the drain may

overflow.

JR06 Auto restart

Available Not effective

Not available Effective

@ Short all the CN2 on the indoor board.

Unit can not be start/ stop using remote controller.

Unit will restart automatically whether the unit is

operated or stopped when the power is cut off.

2CN2

ORN

BRN

RED

Optional timer adapter

PAC-SA89TA-E

I.B.

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Mitsubishi PU-5TJSA Service Manual Page 27

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