Gree HOME GMV [84/367] Control function of hydro box

Gree HOME GMV [84/367] Control function of hydro box
Dc Inverter VRF plus Water Heater Solution Service Manual CONTROL
80
4I / O
Selecting of ambient temperature sensor (Only
for ducted units):
A. Selecting of mainboard ambient
temperature sensor(T
Ambient
and receiver head
temperature sensor(T
Ambient1
);
B. This function will be effective when
mainboard controlled without wired controller.
Ambient
temperature
sensor on
mainboard is
selected
Ambient
temperature
sensor on
receiver head is
selected
5L/H
Select to choose high E.S.P or low E.S.P fan
speed
Select low
E.S.P fan
speed
Select high
E.S.P fan speed
Functional description of master / slave indoor unit:
This function is effective without wired controller. if it has wired controller, the master / slave unit function is
operated by wired controller;
The complete unit will judge automatically. it will select the minimum indoor unit address code and minimum
pinboard address code as master indoor unit.
Once the indoor unit address is decided, the operation mode of the complete unit will follow the operation mode
of the selected unit. For example, if the master indoor unit is in cooling (heating) mode, the outdoor will operate
under cooling(heating) mode, and any indoor units which operate under cooling (heating) mode will show mode
conflict.
When the master indoor unit meets power failure or is turned off, the unit mode will be treated as the former
mode conflict, i.e. the operation mode of the indoor unit mode is the operation mode of the complete unit.
2.3 Control Function of Hydro-box
1Instant Heating Mode
Two Temp Sensors: There is a temp sensor that is respectively in the upper part and lower part of the water
tank. When the setting temperature is higher than both temp sensors for 5 or above, the hydro-box will enter
heating mode; If the setting temperature is higher than the temp sensor in lower part of water tank for 5 or
above, but which can’t be met by the temp sensor in upper part, The heating mode will start in 10min.
Single Temp Sensor: if there is only temp sensor in the lower part of water tank, when the setting temperature
is higher than lower temp sensor for 5 or above, the heating mode will be entered.
2Energy-saving Heat Retaining Mode
Two temp Sensors: when the temp of the lower temp sensor is 2 higher than the setting temp, heat
retaining mode will be entered.
Single Temp Sensor: when the setting temp is equal to the temp of lower temp sensor, heat retaining mode will
be entered.
3Anti-freezing
Once the temp of inlet or outlet temp sensor of
Tube in tube is lower than or equal to 3, or the temp of water
temp sensor is lower than or equal to 5, the wired controller of water tank will display “Anti-freezing”. At that time,
whether it is ON or not, anti-freezing operation will running until temperatures of inlet and outlet temp sensors are
higher than or equal to 10. If the conditions for quiting anti-freezing can’t be met, the outdoor unit will handle
this. When such conditons can be met, water heating operation will stop.
4) Breaking off of Waterproof Temp Sensor
When the unit is ON, if temperatures of inlet and outlet temp sensors are 20 higher than the temp of water
temp sensor after 10min running of water pump, the wired controller will display “FL”( Error code of water temp
sensor is also “FL”).
5 Forcible Start of Water Pump
When the unit is OFF, press both buttons “Mode” and “”simultaneously for 5s to start this function, which is
also the method for turning off this function.
The function can last 30 minutes the longest.

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