Mitsubishi PUHZ-RP60VHA Service Manual download pdf (Page 41)

[TEST] button

Pipe (liquid) temperature

Displays the remaining

test run time.

"TEST RUN" and the currently selected

operation mode are displayed altemately.

• In case of test run, the OFF timer will be activated, and the test run will automatically stop after 2 hours.

• The room temperature display section shows the pipe temperature of indoor units during the test run.

• Check that all the indoor units are running properly in case of simultaneous twin and triple operation. Malfunctions may not

be displayed regardless of incorrect wiring.

w1 After turning on the power supply, the system will go into startup mode, “PLEASE WAIT” will blink on the display section of

the room temperature, and lamp(green) of the remote controller will blink.

As to INDOOR BOARD LED, LED1 will be lit up, LED2 will either be lit up in case the address is 0 or turned off in case the

address is not 0. LED3 will blink.

As to OUTDOOR BOARD LED, LED1(green) and LED2(red) will be lit up. (After the startup mode of the system finishes,

LED2(red) will be turned off.)

In case OUTDOOR BOARD LED is digital display, — and — will be displayed alternately every second.

• If one of the above operations doesn’t function correctly, the causes written below should be considered. Find causes from

the symptoms.

The below symptoms are under test run mode. “startup” in the table means the display status of w1 written above.

Remote Controller Display

Symptoms in test run mode

OUTDOOR BOARD LED Display

Cause

Remote controller displays “PLEASE

WAIT”, and

cannot be operated.

After power is turned on, “PLEASE WAIT”

is displayed for 3 minutes, then error code

is displayed.

No display appears even when remote

controller operation switch is turned on.

(Operation lamp does not light up.)

Display appears but soon disappears

even when remote controller is operated.

• After power is turned on, “PLEASE WAIT” is displayed for 2

minutes during

system startup. (Normal)

• Incorrect connection of outdoor terminal block (L

1, L2, L3 and

S1, S2, S3.)

• Outdoor unit’s protection devise connector is open.

• Incorrect wiring between the indoor and outdoor unit (Polarity

is wrong for S1, S2, S3.)

• Remote controller transmission wire short.

• There is no outdoor unit of address 0.

(Address is other than 0.)

• Remote controller transmission wire open.

• After canceling function selection, operation is not possible for

about 30 seconds. (Normal)

After “startup” is displayed, only

green lights up. <00>

After “startup” is displayed,

green(once) and red(once) blink

alternately. <F1>

After “startup” is displayed,

green(once) and red(twice) blink

alternately. <F3, F5, F9>

After “startup” is displayed,

green(twice) and red(once) blink

alternately. <EA. Eb>

After “startup” is displayed, only

green lights up. <00>

After “startup” is displayed, only

green lights up. <00>

< > indicates digital display.

2. Press TEST button twice.

1. Turn on the main power supply.

3. Press OPERATION SWITCH

button.

4. Press AIR DIRECTION button.

5. Check the outdoor unit fan for

correct running.

6. Press the ON/OFF button to reset the test run in progress.

7. Register the contact number.

While the room temperature display on the remote

controller is “PLEASE WAIT”, the remote controller is disabled.

Wait until “PLEASE WAIT” disappears before using remote controller.

“PLEASE WAIT” appears for about 2 minutes after power

supply is turned on. w1

The outdoor unit features automatic capacity control to

provide optimum fan speeds. Therefore, the fan keeps

running at a low speed to meet the current outside air

condition unless it exceeds its available maximum power.

Then, in actuality, the fan may stop or run in the reverse

direction depending on the outside air, but this does not

mean malfunction.

Check for correct motion of auto-vanes.

Cooling mode:

Check if cool air blows and water is drained.

Heating mode: Check if warm air blows. (It takes a little

while until warm air blows.)

The TEST RUN appears on the screen.

Operating procedures

w Press the remote controller’s CHECK button twice to perform self-diagnosis. See the table below for the contents of LCD display.

LCD

Contents of trouble

Abnormality of room temperature thermistor

Abnormality of pipe temperature thermistor/Liquid

Abnormality of drain sensor/ Float switch connector open

Drain overflow protection is working.

Freezing/overheating protection is working.

Abnormality of pipe temperature

Abnormality of pipe temperature thermistor/Cond./Eva

Abnormality of indoor controller board

LCD

Contents of trouble

U1~UP

F3~F9

E0~E5

E6~EF

----

FFFF

Malfunction outdoor unit

Malfunction

outdoor unit

Remote controller transmitting error

Indoor/outdoor unit communication error

No error history

No applied unit

Forced compressor stop(due to water leakage abnormality)

LED1

(microcomputer power supply)

LED2

(remote controller)

LED3

(indoor/outdoor communication)

Lits when power is supplied.

Lits when power is supplied for wired remote controller.

The indoor unit should be connected to the outdoor unit with address “0” setting.

Flash when indoor and outdoor unit are communicating.

See the table below for details of the LED display (LED 1, 2, 3) on the indoor controller board.

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Mitsubishi PUHZ-RP60VHA Service Manual Page 41

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