Mitsubishi Electric EHGT17D-YM9ED Service Manual page 27

2. Settings using the main remote controller
In this menu, all parameters required to record the consumed electrical energy and the delivered heat
energy which is displayed on the main remote controller can be set. The parameters are an electric
heater capacity, supply power of water pump and heat meter pulse.
Follow the procedure described in General Operation for the set up operation.
For Pump 1, *** can be also set besides this setting.
In the case *** is selected, the system acknowledges "factory fitted pump" is selected.
<External input settings>
Demand control(IN4)
The selection of "OFF", whilst a signal is being sent to IN4, forcefully stops all
the heat source operations and the selection of "Boiler" stops operations of
heat pump and electric heater and performs boiler operation.
Outdoor thermostat (IN5)
The selection of "Heater", whilst a signal is being sent to IN5, performs
electric-heater-only operation and the selection of "Boiler" performs boiler
operation.
<Running information>
This function shows current temperature and other data of main component parts
of heat pump unit.
1. From the Service menu highlight Running information.
2. Press CONFIRM.
3. Use the function buttons to enter index code for the component to be viewed.
(See 8-6. Request code list.)
4. Press CONFIRM.
<Thermistor reading>
This function shows the current readings of thermistors located on the water and refrigerant circuit
Thermistor Description
TH1A Zone1 room temperature
TH1B Zone2 room temperature
TH2 Refrigerant return temperature
THW1 Water flow temperature
THW2 Water return temperature
THW5A DHW tank upper water temperature
THW5B DHW tank lower water temperature
TH7 Ambient (outdoor) temperature
OCH722A
Thermistor Description
THW6 Zone1 flow water temperature
THW7 Zone1 return water temperature
THW8 Zone2 flow water temperature
THW9 Zone2 return water temperature
THW10 Mixing tank water temperature
THWB1 Boiler flow water temperature
TH32 Brine inlet temperature
TH34 Brine outlet temperature
27
Energy monitor settings menu screen
External input settings menu screen
Demand control screen
Outdoor thermostat setting screen