Test Run; Check Items Before Test Run; Test Run Method - Mitsubishi Electric PUHY-P200 Service Handbook

• • Test Run

[1] Check Items before Test Run

1 Check refrigerant leak, loose power source or transmission line if found.
Measure resistance between the power source terminal block and ground with a 500V megger to confirm it is exceeding 1.0MΩ.
Notes: 1.
Do not operate the unit when the insulation resistance stays below 1.0MΩ.
2.
Never apply a megger to the transmission line terminal block. Otherwise, the control board will be damaged.
3.
At immediately after installation or when the unit is left with the main power source turned off for a long time, the insulation
2
resistance between the power source terminal block and ground may drop down to 1MΩ approximately due to refrigerant
accumulated inside the compressor.
4.
When the insulation resistance counts for more than 1MΩ, power the crankcase heater for 12 hours or more by turning the main
power source on. Doing this way evaporates refrigerant inside the compressor leading to increase the insulation resistance.
5.
Never measure the insulation resistance of the transmission terminal block for the MA remote controller.
Confirm that the ball valves are fully opened at both gas and liquid sides.
3
Note: 1. Make sure to tighten the cap.
Check the phase order of the 3-phase power source and the voltage between each phase.
4
Note: 1. Open phase or reverse phase causes the emergency stop of test run. (4103 error)
[When connected to the transmission booster for transmission line]
Before turning on the outdoor unit, turn on the transmission booster for transmission line.
Notes: 1.
5
When the outdoor unit is turned on first, connection information of refrigerant system may not be confirmed normally.
2.
If the outdoor unit is turned on first, after turning on the transmission booster for transmission line, reset the power of the outdoor
unit.
Turn the main power source on 12 hours at least before test run to power the crankcase heater.
6
Note: 1. Shorter powering time may cause compressor trouble.

[2] Test Run Method

❉ The illustration shows MA remote controller.
Set temperature button
Operation selector button
1
Turn on universal power supply at least 12 hours before getting started
2
Press TEST button twice
3
Press
Press
4
air is blowing out
5
Press adjust button
6
Press or
7
Make sure that indoor unit fans operate normally
8
Make sure that interlocking devices such as ventilator operate normally if any
9
Press ON/OFF button to cancel test run
Note 1: If check code is displayed on remote controller or remote controller does not operate normally.
2: Test run automatically stops operating after two hours by activation of timer set to two hours.
3: During test run, test run remaining time is displayed on time display section.
4: During test run, temperature of liquid pipe in indoor unit is displayed on remote controller room temperature display section.
5: When pressing
However, it is not a malfunction.
6: When pressing
However, it is not a malfunction.
Check code display
Test run remaining time display
STAND BY
DEFROST
PAR-F27MEA
Air speed button
Operation procedure
Displaying "TEST RUN'' on display panel
selection button Make sure that air is blowing out
select button to change from cooling to heating operation, and vice versa
Make sure that air blow is changed
button to change wind Make sure that horizontal or downward blow is adjustable.
Stop operation
adjust button, depending on the model, "NOT AVAILABLE" may be displayed on remote controller.
or button, depending on the model, "NOT AVAILABLE" may be displayed on remote controller.
( )Powering display
Indoor unit liquid pipe temperature display
1Hr.
CENTRALLY CONTROLLED
ßC
ON OFF
D A I L Y
AUTO OFF CLOCK
FILTER
CHECK REMAINDER
CHECK MODE

TEST RUN

ßC LIMIT TEMP.
ERROR CODE
NOT AVAILABLE
TEMP
ON/OFF
CLOCK ON OFF FILTER
CHECK TEST
TIMER SET
Louver button
Displaying "HO" on display panel for about 5 minutes
- 81 -
Test run display
ON/OFF lamp
ON/OFF button
Vertical air direction button
Test run button
Ventilation button
Make sure that warm or cold