Maintenance - Panasonic WH-MDC05H3E5 Service Manual

11.1.8.4 Check RCCB
Ensure the RCCB set to "ON" condition before check
RCCB 2.
Turn on the power supply to the Mono bloc unit.
This testing could only be done when power is
supplied to the Mono bloc unit.
Be careful not to touch parts other than RCCB test button when
the power is supplied to Mono bloc unit. Else, electrical shock
may happen.

Push the "TEST" button on the RCCB. The lever
would turn down and indicate "0", if it functions
normal.

Contact authorized dealer if the RCCB
malfunction.

Turn off the power supply to the Mono bloc unit.

If RCCB functions normal, set the lever to "ON"
again after testing finish.
This product contains fluorinated greenhouse gasses.
Refrigerant type : R410A (GWP=2088)
For WH-MDC05H3E5
Amount : 1.30 kg (2.7144 ton CO
For WH-MDC07H3E5 & WH-MDC09H3E5
Amount : 1.35 kg (2.8188 ton CO
11.1.9 Test Run
1. Before test run, make sure below items have been
checked:-
Pipework are properly done.
o
Electric cable connecting work are properly
o
done.
Mono bloc unit is filled up with water and
o
trapped air is released.
2. Antifreeze agent must be added into water circuit
to prevent freezing of water when outdoor ambient
temperatures is low. Recommended antifreeze:
Propylene glycol: 40% (equivalent to -20°C)
3. Set ON to the Mono bloc unit and RCCB. Then,
for remote control operation please refers to
(Mono bloc) Air-to-Water Heatpump's operation
instruction.
4. For normal operation, pressure gauge reading
should be in between 0.05 MPa and 0.3 MPa.
5. After test run, please clean the Water filter.
Reinstall it after finish cleaning.
11.1.9.1 Check Water Flow of Water
Circuit
Confirm the maximum water flow during main pump
operation not less than 15 l/min.
*Water flow can be check through service setup
(Pump Max Speed)
[Heating operation at low water temperature with
lower water flow may trigger "H75" during defrost
process.]
WARNING
equivalent)
2
equivalent)
2
11.1.9.2 Reset Overload Protector
Overload Protector serves the safety purpose to
prevent the water over heating. When the Overload
Protector trip at high water temperature, take below
steps to reset it.
1. Take out the cover.
2. Use a test pen to push the centre button gently in
order to reset the Overload Protector.
3. Fix the cover to the original fixing condition.

11.1.10 Maintenance


In order to ensure optimal performance of the unit,
seasonal inspections on the unit, functional check
of RCCB, field wiring and piping have to be
carried out at regular intervals. This maintenance
should be carried out by authorized dealer.
11.1.10.1 Maintenance for Water Filter
Set
1. Remove the Cover by loosening the mounting
screws to access to the Water Filter Set.
2. Turn OFF power supply.
3. Set the two valves for the Water Filter Set to
"CLOSE".
4. Take off the clip, then gently pull out the mesh.
Beware of small amount water drain out from it.
5. Clean the mesh with warm water to remove all the
stain. Use soft brush if necessary.
6. Reinstall the mesh to the Water Filter Set and set
back the clip on it.
7. Set the two valves for the Water Filter Set to
"OPEN".
8. Turn ON power supply.
9. After cleaning, reinstall the Cover by tightening the
mounting screws properly.
Do not add or replace other than R410A type. It may cause
product damage, burst, injury and etc. Use compatible
R410A tools for refrigerant piping work and refrigerant
charging during installation or servicing.
65
Use test
pen to push
this button
for reset
Overload
protector 0.
WARNING
Cover g
Mounting
screws