62
Air to Water Heat Pump
Service Manual- Versati II Series
MAINTENANCE
F3
Refrigerant gas line temperature
sensor error
●
The plug on temperature sensor is
not correctly connected to the socket on
mainboard.
●
The resistance of temperature sensor
is not correct.
It will be automatically cleared after the
failure is removed.
dF
other thermal outlet temperature
sensor error
●
The plug on temperature sensor is
not correctly connected to the socket on
mainboard.
●
The resistance of temperature sensor
is not correct.
It will be automatically cleared after the
failure is removed.
F0 Room temperature sensor error
●
The plug on temperature sensor is
not correctly connected to the socket on
mainboard.
●
The resistance of temperature sensor
is not correct.
It will be automatically cleared after the
failure is removed.
Ec Water ow switch protection
●
The switch is damaged.
●
The wire of the switch is loose.
●
The position of the switch is wrong
It will be cleared after the unit is
energized again.
E2 Indoor anti-frozen protetion
●
The resistance of temperature sensor
is not correct.
●
The electric expansion valve can not
work normally.
It will be cleared once malfunction is
removed or it will be shown all the time;
but it will be cleared immediately when
switching operation mode.
No display
Sanitary water tank High-temp
protection
●
The resistance of temperature sensor
is not correct.
●
The plug on temperature sensor is
not correctly connected to the socket on
mainboard.
●
Mainboard of outdoor unit is damaged.
Press ON/OFF key to clear
Ed
outlet temperature High-temp
protection (This error code will not
displayed on wired controller but
only on mainboard of outdoor unit)
●
The resistance of temperature sensor
is not correct.
●
The plug on temperature sensor is
not correctly connected to the socket on
mainboard.
●
Mainboard of outdoor unit is damaged.
If the malfunction is removed, the code
will be automatically cleared.
No display solar outlet High-temp protection
●
The resistance of temperature sensor
is not correct.
●
The plug on temperature sensor is
not correctly connected to the socket on
mainboard.
●
Mainboard of outdoor unit is damaged.
Press ON/OFF key to clear
EH
Welding protection of the auxiliary
heater 1
●
The AC contactor is damaged.
De-energize the unit and then, energize it
again. If the malfunction is removed, the
code will be cleared.
EH
Welding protection of the auxiliary
heater 2
●
The AC contactor is damaged.
De-energize the unit and then, energize it
again. If the malfunction is removed, the
code will be cleared.
EH
Welding protection of the water tank
heater
●
The AC contactor is damaged.
De-energize the unit and then, energize it
again. If the malfunction is removed, the
code will be cleared.
dU Pull-out of the gate-controller
●
the gate-controller is pull out
It will be cleared after the gate-controller
is rewire