Malfunction Analysis - Gree GRS-2.4/D270ANbA-K Manuel D'installation

(10) In order to prevent the hazard due to the invalidation if electric heating of
water tank, the electric heating circuit is equipped with thermostat. If the
water temperature is higher than 95℃, the thermostat will be activated to cut
off the electric heating power. However, if the electric heating is abnormal, it
needs to contact Gree service man to maintain or replace it.
(11) The water inlet pressure for the water tank is 0.2bar~8bar. Before installation,
please confirm the water pressure range. And the hose-sets should not be
reused.
Notes: TP valve provided by user. Suggest to choose TP valve that the pressure
is less than 8.8bar and the temperature is less than 99℃.

11 Malfunction analysis

Warning
Please do not maintain the air source water heater by yourselves; otherwise, it
may cause electric shock or fire hazard. Please contact with Gree appointed
maintenance center for maintenance. Before asking for the maintenance, please
check below items for saving your time and cost.
"Malfunction"phenomenon
The unit can't operate if turn on the unit
immediately after stopping operation
There's water-flowing sound during
operation process.
The condensate water is drained out
from the water heater.
There's water drainage from the TP
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valve.
Air Source Heat Pump Water Heater
Talbe 11-1
"Malfunction"analysis
In order to protect the unit, if turn on the unit
immediately after stopping operation, the
microcomputer will make the unit delay 5
min to operate.
During the operation process, there will be
the sound of "HUA－HUA－", which is
the flowing sound of refrigerant. It's not the
malfunction.
This is the normal phenomenon for the unit,
not the malfunction. Please feel free to
operate it. Please connect the drainage
pipe to the proper drainage outlet by
referring to Installation sketch map.
During heating process, when the inner port
of water tank operates at ultrahigh
pressure, there will be a little water
drainage from the TP valve for releasing
pressure, which is the normal phenomenon.
If there's too much water drainage and
there's vibration, please contact the
appointed maintenance center.
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