20. TEST RUN
20-1. Preparing for Test Run
●
Before attempting to start the air conditioner, check the
following.
(1) All loose matter is removed from the cabinet especially
steel filings, bits of wire, and clips.
(2) The control wiring is correctly connected and all electrical
connections are tight.
(3) The protective spacers for the compressor used for
transportation have been removed. If not, remove them
now.
(4) The transportation pads for the indoor fan have been
removed. If not, remove them now.
(5) The power has been connected to the unit for at least
5 hours before starting the compressor. The bottom of
the compressor should be warm to the touch and the
crankcase heater around the feet of the compressor should
be hot to the touch.
ON
(Power must be turned
ON at least 5 hours
before attempting test
run)
Power mainsPower m
(6) Both the gas and liquid tube service valves are open. If
not, open them now.
Balance tube
Liquid tube
Gas tube
(7) Request that the customer be present for the trial run.
Explain the contents of the operating instructions, then
have the customer actually operate the system.
(8) Be sure to give the operating instructions and warranty
certificate to the customer.
(9) When replacing the control PCB, be sure to make all the
same settings on the new PCB as were in use before
replacement.
The existing EEPROM is not changed, and is connected to
the new control PCB.
U-10MES2E8
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