Mitsubishi Electric EHGT17D-YM9ED Service Manual page 68

9-8. FUNCTION OF SWITCHES
(1) Function of switches (FTC controller board)
Located on the FTC controller board are 6 sets of small white switches known as
DIP switches. The DIP switch number is printed on the circuit board next to the
relevant switches. The word ON is printed on the circuit board and on the DIP
switch block itself. To move the switch you will need to use a pin or the corner of
a thin metal ruler or similar.
DIP switch settings are listed below in Table 9.8.1.
Only an authorised installer can change DIP switch setting under one's own re-
sponsibility according to the installation condition.
Make sure to turn off heat pump unit power supplies before changing the switch
settings.
DIP switch
SW1 SW1-1 Boiler
SW1-2 Heat pump maximum outlet water temperature
SW1-3 DHW tank
SW1-4 Immersion heater
SW1-5 Booster heater
SW1-6 Booster heater function
SW1-7
SW1-8 Wireless remote controller
SW2 SW2-1 Room thermostat1 input (IN1) logic change
SW2-2 Flow switch1 input (IN2) logic change
SW2-3 Booster heater capacity restriction
SW2-4
Automatic switch to backup heat source operation
SW2-5
(When compressor stops by error)
SW2-6 Mixing tank
SW2-7 2-zone temperature control
SW2-8
SW3 SW3-1 Room thermostat 2 input (IN6) logic change
SW3-2 Flow switch 2,3 input (IN3,7) logic change
SW3-3
SW3-4 Electric energy meter
SW3-5
SW3-6 2-zone valve ON/OFF control
SW3-7
SW3-8 Heat meter
SW4 SW4-1
SW4-2
SW4-3
SW4-4 Water circuit only operation (during installation work) *3 Inactive
SW4-5 Emergency mode (Heater only operation)
SW4-6 Emergency mode (Boiler operation)
SW5 SW5-1
SW5-2 Advanced auto adaptation
SW5-3
SW5-4
SW5-5 Capacity code
SW5-6
SW5-7
SW5-8
SW6 SW6-1
SW6-2
SW6-3
SW6-4 Analog output signal (0-10V)
SW6-5 Model select
Note: *1. External output (OUT11) will be available. For safety reasons, this function is not available for certain errors. (In that case, system operation
must be stopped and only the water circulation pump keeps running.)
*2. Active only when SW3-6 is set to OFF.
*3. Space heating and DHW can be operated only in water circuit, like an electric boiler.
*4. If emergency mode is no longer required, return the switch to OFF position.
OCH722A
Function
WITHOUT Boiler
55ºC
WITHOUT DHW tank
WITHOUTImmersion heater
WITHOUT Booster heater
For heating only
—
WITHOUT Wireless remote controller
Zone1 operation stop at thermostat short Zone1 operation stop at thermostat open OFF
Failure detection at short
Inactive
—
Inactive
WITHOUT Mixing tank
Inactive
—
Zone2 operation stop at thermostat short Zone2 operation stop at thermostat open OFF
Failure detection at short
—
WITHOUT Electric energy meter
—
Inactive
—
WITHOUT Heat meter
—
—
—
Normal
Normal
—
Inactive
—
—
—
—
Inactive
Air to Water
OFF
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
<Table 9.8.1>
68
<Figure 9.8.1>
ON
WITH Boiler
60ºC
WITH DHW tank
WITH Immersion heater
WITH Booster heater
For heating and DHW
—
WITH Wireless remote controller
Failure detection at open
Active
—
Active *1
WITH Mixing tank
Active *2
—
Failure detection at open
—
WITH Electric energy meter
—
Active
—
WITH Heat meter
—
—
—
Active
Emergency mode (Heater only operation) OFF *4
Emergency mode (Boiler operation)
—
Active
—
—
—
—
—
—
—
—
—
Active
Brine to Water
SW5
SW4
SW3
SW2
SW1
SW6
Default
settings
OFF
ON
ON
OFF
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
ON
OFF
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF *4
OFF
ON
ON
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
ON