Gree VERSATI SERIES User Manual

100
Air to Water Heat Pump
Service Manual- Versati Series
NBJOUFOBODF
UNITS MAINTENANCE
1 ERROR CODE LIST
1) Complete Unit Code
Code Indication
Error Name
Source of Error Signal
Control Description
F4
Outdoor environment temp sensor
error
Ɣ
The plug on temperature sensor is
not correctly connected to the socket on
mainboard.
Ɣ
The resistance of temperature sensor
is not correct.
It will be automatically cleared after the
failure is removed.
F6 Defrost temp sensor error
Ɣ
The plug on temperature sensor is
not correctly connected to the socket on
mainboard.
Ɣ
The resistance of temperature sensor
is not correct.
It will be automatically cleared after the
failure is removed.
F7 Discharge temp sensor error
Ɣ
The plug on temperature sensor is
not correctly connected to the socket on
mainboard.
Ɣ
The resistance of temperature sensor
is not correct.
It will be automatically cleared after the
failure is removed.
F5 Suction temp sensor error
Ɣ
The plug on temperature sensor is
not correctly connected to the socket on
mainboard.
Ɣ
The resistance of temperature sensor
is not correct.
It will be automatically cleared after the
failure is removed.
EF Outdoor fan error
Ɣ
Mainboard of outdoor unit is damaged.
Ɣ
The wire connecting the wiring
terminals of the mainboard breaks.
If it occurs for 3 times during one hour,
it is cleared by de-energization. If it
occurs for less than 3 times, it will be
automatically cleared.
E5
Overload protection of compressor
or driver error
Ɣ
It is the compressor overload switch
error or the compressor drive protection,
and please see the indicating lamp on the
main board of the outdoor unit or the 88
nixie tube for the protection code.
Drive failure; it will be automatically
cleared after 1 min.
E1 Comp High-pressure protection
Ɣ
Comp High-pressure switch is broken
or the wiring is loose.
Ɣ
The water in the tank is not enough.
Ɣ
The installation of tank temp sensor is
not correct.
Ɣ
The gas valve and liquid valve are not
fully open.
Ɣ
The electric expansion valve can not
work normally.
De-energize the unit and then, energize it
again. If the malfunction is removed, the
code will be cleared.
E3 Comp Low- pressure protection
Ɣ
Comp Low-pressure switch is broken
or the wiring is loose.
Ɣ
The system has leaked.
Ɣ
The fans stop running or reverse.
If it occurs for 2 times during 40 minutes,
it is cleared by de-energization or turnning
off. If it occurs for less than 2 times, it will
be automatically cleared.
E4 Comp Discharge temp protection
Ɣ
The resistance of temperature sensor
is not correct.
Ɣ
The electric expansion valve is
blocked.
Ɣ
The system has leaked.
Ɣ
Mainboard of outdoor unit is damaged.
If it occurs for 3 times during one hour,
it is cleared by de-energization. If it
occurs for less than 3 times, it will be
automatically cleared.

Gree VERSATI SERIES Specifications

General

Refrigerant	R410A
Type	Air to Water
Power Supply	220-240V, 50Hz
Heating Capacity Range	4kW - 16kW
Water Outlet Temperature (Heating)	55°C
Application	Underfloor heating, radiators, fan coils
Operating Temperature Range (Cooling)	10°C to 46°C
Noise Level	45-55 dB(A)