Service and Parts Manual (2019, 2020, 2021, 2022)

38 PB
INSTALLATION
Checklist and Operation Test
Check Unit following Installation
No. Items to be checked Possible malfunction
1
Has the unit been
installed firmly?
2
The unit may drop, shake or
emit noise.
Have you done the
refrigerant leakage test?
3
It may cause insufficient cooling
(heating) capacity.
Is heat insulation of
pipeline sufficient?
4
It may cause condensation and
water dripping.
Is water drained well?
5
It may cause condensation and
water dripping.
6
It may cause malfunction or
damage the parts.
Is the voltage of power
supply according to the
voltage marked on the
nameplate?
7
Is electric wiring and
pipeline installed
correctly?
It may cause malfunction or
damage the parts.
It may cause electric leakage.
Is the unit grounded
securely?
8
Does the power cord
follow the specification?
9
It may cause malfunction or
damage the parts.
Is there any obstruction
in air inlet and air outlet?
10
It may cause insufficient cooling
(heating).
11
It may cause malfunction or
damaging the parts.
The dust and
sundries caused
during installation are
removed?
The gas valve and liquid
valve of connection pipe
are open completely?
It may cause insufficient cooling
(heating) capacity.
Test Operation
System Checks
1. Conceal refrigerant pipes where possible.
2. Make sure drain hose slopes downward along entire length at a slope of 1/4”(inch) per ‘(foot).
3. Ensure all refrigerant pipes and connections are properly insulated.
4. Fasten pipes to outside wall, when possible.
5. Seal and weatherproof wall hole which the interconnecting wires and refrigerant pipes pass through.
Perform test operation after completing gas leak and electrical safety check.
1. Turn on electrical disconnect to outdoor unit.
2. Push the “ON/OFF” button on Remote Controller to begin testing or press and hold Emergency ON/OFF button for
5 seconds to force test mode.
3. Push MODE button, select COOLING, HEATING, FAN mode to conrm all functions.
Indoor Unit
1. Do all Remote controller’s buttons function properly?
2. Do the display panel lights work properly?
3. Does the swing louver function properly?
4. Does the drain work?
Outdoor Unit
1. Push the mode button to COOL and adjust the room setting to 61 °F(16°C) deg. wait up to 3 minutes from
compressor time guard. Does compressor and outdoor fan turn on in cooling mode?
2. Push the mode button to HEAT and adjust the room setting to 85 °F(30°C) deg. wait up to 3 minutes for
compressor time guard. Does compressor and outdoor fan turn on in heat mode?
Fig. 438