Mitsubishi Electric PKA-RP100FAL#1 Service Manual download pdf (Page 25)

10-5-2. When wired remote controller or indoor unit micro computer troubles

1. If there is not any other wrong when trouble occures, emergency operation starts as the indoor controller board switch (SWE)

is set to ON.

During the emergency operation the indoor unit is as follows;

(1) Indoor fan high speed operation (2) Drain-up machine operation(Option)

2. When emergency operating for COOL or HEAT, setting of the switch (SWE) in the indoor controller board and outdoor unit

emergency operation are necessary.

3. Check items and notices as the emergency operation

(1) Emergency operation cannot be used as follows;

• When the outdoor unit is something wrong.

• When the indoor fan is something wrong.

• When drain over flow protected operation is detected during self-diagnosis. (Error code : P5)

(2) Emergency operation will be serial operation by the power supply ON/OFF.

ON/OFF or temperature, etc. adjustment is not operated by the remote controller.

(3) Do not operate for a long time as cold air is blown when the outdoor unit starts defrosting operation during heat emer-

gency operation.

(4) Cool emergency operation must be within 10 hours at most. It may cause heat exchanger frosting in the indoor unit.

(5) After completing the emergency operation, return the switch setting, etc. in former state.

(6) Since vane does not work at emergency operation, position the vane manually and slowly.

10-5. EMERGENCY OPERATION

10-5-1. When wireless remote controller troubles or its battery is exhausted

1. Emergency operation is available in such a case using emergency operation switch equipped next to the receiver of indoor

unit.

2. To start operation

• Cooling Operation·······Press (Cooling) switch.

• Heating Operation·······Press (Heating) switch.

wWhen the unit starts operating, the power lamp is lit.

3. To stop operation

• Press either emergency operation switch (cooling/heating).

Mode

Cooling

Heating

Set temperature

Fan speed

Airflow direction

24

High

Downward (70deg)

24

High

Horizontal (30deg)

+Emergency operation will be performed as follows.

Receiving

section

Power lamp

Defrosting • Initial heating lamp

Emergency switch(Heat)

Emergency switch(Cool)

COOL

O F F

HEAT

STAND

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Mitsubishi Electric PKA-RP100FAL#1 Service Manual Page 25

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