Chapter Ⅲ Debugging and Operation（4. Debugging Operation）
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(1) If the switch of wired controller works normally.
(2) If each function button works normally.
(3) If the indicator of main board is on.
(4) Press the electric heating operation button and see if the button works normally.
(5) If the drainage is smooth.
(6) Check if the unit works normally under water heating mode.
(7) If the water outlet temperature and the difference between water inlet and outlet temperature is
ok.
(8) If there is vibration and abnormal sound during operation.
(9) If the air, noise and condensation water generated may affect neighbourhood.
(10) If there is refrigerant leakage.
Cold water lifting pump drains out and cold water pipe drains out
Circulating pump drains out and circulating pipe drains out
Check the idling
direction of pump
Open the flexible
connection of unit
Open the
circulating valve
Drain the water pipe
Screw up the flexible
connection of unit
End
Reverse the power
cord of pump
Activate the AC contactor of
cold water lifting pump to make it
close. When the pump is idling,
release the contactor to check if the
impeller rotating direction is correct
Loosen the flexible connection of
water inlet pipe to drain the water
and do not let water getting into
unit
Open the circulating water
outlet valve of water tank
Activate the AC contactor of hot water circulating pump
to make it close. When the pump is idling, the water in
water tank gets into the pipeline and flows out from the
flexible connection before water gets in. Observe the
water outlet until water is clear. Repeat it for two times
or three times.
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