Panasonic WH-MXC16J9E8 Service Manual page 57

12.1.8.4 Check RCCB ②
Ensure the RCCB ② 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 ②. The
lever would turn down and indicate "0", if it
functions normal.

Contact authorized dealer if the RCCB ②
malfunction.

Turn off the power supply to the Mono bloc unit.

If RCCB ② functions normal, set the lever to
"ON" again after testing finish.
This product contains fluorinated greenhouse gasses.
Refrigerant type : R32 (GWP=675)
For WH-MXC09J3E8 and WH-MXC12J9E8
Amount : 1.6kg (1.080 ton CO
For WH-MXC16J9E8
Amount : 1.8 kg (1.215 ton CO
12.1.9 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 ②.
Then, for remote control operation please refers to
(Mono bloc) Air-to-Water Heatpump's operation
instruction.
Note:

During winter, turn on the power supply and
standby the unit for at least 15 minutes before test
run.
Allow sufficient time to warm up refrigerant and
prevent wrong error code judgement.
4. For normal operation, Water Pressure Gauge ④
reading should be in between 0.05 MPa and 0.3
MPa.
5. After test run, please clean the Magnetic Water
Filter Set ⑬. Reinstall it after finish cleaning.
WARNING
equivalent)
2
equivalent)
2
12.1.9.1 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.]
12.1.9.2 Reset Overload Protector ⑩
Overload Protector ⑩ serves the safety purpose to
prevent the water over heating. When the Overload
Protector ⑩ 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 ⑩.
3. Fix the cover to the original fixing condition.
57
Use test pen to push this
button for reset Overload
Protector .
10