Overall Checking; Phase Protector (Optional); Service And Maintenance - Daikin FHC20JEVLK Installation Manual

• Ensure that:
1) The unit has been mounted solidly and rigid in
position.
2) The piping and connections are leak-proof after the
charging.
3) Proper wiring has been installed.
• Drainage check
– pour some water into the left side of the drain pan (the
drainage is at the right side of the unit).
• Test run:
1) Conduct a test run on the unit after having perform
the water drainage test and the gas leakage test.
2) Check the following items:
a) Is the electrical plug inserted firmly into the socket?
The unit with Scroll Compressor can only rotate in one direction. For this reason, a protective device (phase protector) is fitted
to prevent incorrect wiring of the electrical phases. When the three phases are not connected correctly, the phase protector
operates, and the unit will not start. This device is located in the control box of the outdoor unit.
The following table shows the LED indicator light for phase protector under normal operation and fault conditions.
LED
Description (Red)
Normal operation
Reverse phase
T phase missing
S phase missing
R phase missing
+
S &T phase missing
Overload +
Sensor missing +
ON
NOTE
1. "+" indicates additional functions for PP01 phase protector.
2. When R phase missing, no LED or buzzer will indicate the error, but relay 71 and relay 81 will cut off.
Service Parts
Indoor Air Filter 1.
2.
3.
Indoor Unit 1.
2.
Indoor Fan 1.
• Avoid direct contact of any coil treatment cleaners on plastic part. This may cause plastic part to deform
as a result of chemical reaction.

OVERALL CHECKING

PHASE PROTECTOR (OPTIONAL)

PW P_R P_S
(Yellow) (Yellow) (Yellow)
OFF

SERVICE AND MAINTENANCE

Maintenance Procedures
Remove any dust adhering to the lter by using a vacuum cleaner
or wash in lukewarm water (below 40°C) with a neutral cleaning
detergent.
Rinse the lter well and dry before placing it back onto the unit.
Do not use gasoline, volatile substances or chemicals to clean the lter.
Clean any dirt or dust on the grille or panel by wiping it with a soft
cloth soaked in lukewarm water (below 40°C) and a neutral detergent
solution.
Do not use gasoline, volatile substances or chemicals to clean the indoor
unit.
Check for any abnormal noise.
! CAUTION
b) Is there any abnormal sounds from the unit?
c) Is there any abnormal vibrations on the unit or the
piping?
d) Is the drainage of water smooth?
• Confirm that:
1) The condenser fan is running. Check the warm air
blowing from the condensing unit.
2) The evaporator blower is running and discharge cool
air.
3) The suction (low side) pressure is as recommended.
4) The remote controller incorporates a 3-minute
delay protection in the circuit, whereby the outdoor
condensing unit requires about 3 minutes delay before
it can start operating.
P_T
Switch off the unit. Check the 3 phase wiring.
Switch off the unit. Check the 3 phase wiring.
Switch off the unit. Check the 3 phase wiring.
Switch off the unit. Check the 3 phase wiring.
Switch off the unit. Check the 3 phase wiring.
High discharge temperature. Check the refrigerant system.
Switch off the unit. Plug in sensor.
Fast Blink
1-23
Actions
-
Period
At least every
2 week.
More frequently
if necessary.
At least every
2 week.
More frequently
if necessary.
When necessary