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11. TEST RUN
11-1. 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 supplied 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. (Fig. 11-1)
(6) Both the gas and liquid tube service valves are
open. If not, open them now. (Fig. 11-2)
(7) Request that the customer be present for the trial
run.
Explain the contents of the instruction manual, then
have the customer actually operate the system.
(8) Be sure to give the instruction manual 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.
Fig. 11-1
Fig. 11-2
Power mains switch
(Power must be turned ON
at least 5 hours before
attempting test run)
ON
Liquid tube
Gas tube
07-115 SSHP_II 5/7/07 4:00 PM Page 104