11. Test Operation - Haier 1U71S2SS5FA Installation Manual

head and prevent appropriate tightening.
components
CAUTION
that each electric part and terminal inside the
electric part box is connected securely.

11. Test operation

DANGER
Never leave the unit unattended during
installation or servicing. When the service panel
is removed live parts can be easily touched by
accident.
INFORMATION
than stated on the nameplate ofthe unit. This
phenomenon originates from the compressor
that needs elapse of a 50 hours run in period
before reaching smooth operation and stable
Items to check
Electrical
forgotten and that there are no missing
phases or reverse phases.
measuring insulation.
voltage circuits.
piping Is the insulation material for the piping
Are both the liquid and gas pipes
Are the stop valves for both the liquid
Extra
refrigerant
Be sure to perform a test run.
in cooling mode operation.
panel during test run.
1. In order to detect stop valves failing to open,
operation ofthe unit is compulsorily performed in
keptdisplaying the heating symbol all the time and
after elapse of that time.
2. In case you cannot operate the unit in test run
mode for any unusual reason, refer to
3.
the run only after having installed the indoor unit
4. In case the panels of indoor units are not yet installed
5.
after having performed a normal operation stop
on the remote controller. Do not stop operation by
turning circuit breakers off.
21
"11.4. Failure
.