Mitsubishi Electric PCH-2GKHA Service Manual page 39

2-6 TIMER operation
4
<Timer setting example>
OFF
2-7 Test run
<Before test run>
After installing, wiring, and piping the indoor and outdoor units, check for refrigerant leakage, looseness in power supply or
contorol wiring, and mistaken polarity.
Use a 500-volt megger to check the resistance between the power supply terminal block and ground to make sure that it is
at least 1.0MΩ.
Attention:
Do not use the air conditioner if resistance is less than 1.0MΩ.
Remote controller
4
TEST RUN button
TEST RUN
Indoor coil temperature code Display
*The above figure shows the state of TEST
RUN at cooling operation.
When a TEST RUN is started,the timer shall be set to 2 hours. The unit will automatically turn off after 2 hours.
FILTER
CHECK MODE
TEST RUN
This setting will stop the air conditioner in 8 hours.
With the lapse of time, time display changes in 1 hour units, showing remaining time.
1
2
FILTER
CHECK MODE
TEST RUN
3
4
Display
5
6
<Timer function>
AUTO STOP ·········The air conditioner stops after the set time lapses.
AUTO START ········The air conditioner starts after the set time lapses.
TIMER OFF ··········Timer is not active.
<How to operate>
1. Press POWER ON/OFF button.
2. Press " " button to select AUTO STOP or AUTO START.
3. Press " " button to set desired time.
Time setting is in 1 hour units for up to 24 hours.
Each time HOURS button is pressed, set time increases by 1 hour.
When HOURS button is pressed and held, the set time increases
by 1 hour every 0.5 seconds.
4. To cancel the timer operation, press POWER ON/OFF button.
Turn on main switch,12 hours before proceeding to step 2 to allow
for crankcase heater operation.
Push the TEST RUN button twice and indication of TEST RUN will
be shown on the liquid crystal display.
Press the button to display
confirm that cool (or warm) air is blown out.
(At heating operation, there may be a short delay before warm air
begins to blow out.)
Push button LOW/HIGH to check that the fan speed changes
properly.
Check the operation of outdoor unit fans.This unit controls the
rotation speed and performance capacity of fans.ln some cases,it
may rotate at low speed as the condition of outside air requires and
the speed will be kept unless the performance has become deficient.
Therefore,when the condition of outside air demands,there may be
such cases as the fan stops or rotates reversely.
Please note that these symptoms are not mulfunction.
After the check is finished leave the test run mode, push the power
ON/OFF button.
It can also be stopped by pushing the timer MODE button.
, COOL/DRY(or HEAT)to
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