GF83.70-S-2002S | Terminate heater mode, function | 20.12.03 |
MODEL 639.711 /713 with CODE (HZ1) Warm air auxiliary heater (Westfalia)
N83.70-2204-11
26 "Weekday" display
27 "°C" display
28 "Stationary heating mode" display
29 "Time, switch-on time and outside temperature" multiple display
30 "Activated switch-on times" display
31 Display field
32 Heat output control knob
33 "Increase" button
34 "Decrease" button
35 "ON/OFF" button for auxiliary heater
36 "Switch-on time, weekday and timer" button
37 "Time and preset time" button
N35 STH warm air timer
The heating mode is switched off directly on the STH warm air timer (N35) or the heater unit (A7) or by preselectionFuel delivery is stopped immediately by shutting off the warm air STH fuel metering pump (M46/2). To cool down the heater unit (A7) the hot air blower fan motor (A7m1) is activated for approx.
t = 4 min. (cold blow phase). The glow pin (A7r1) is actuated for
t = 40 s during the cold blow phase to clean it from possible combustion residuesWhen the cold blow phase is completed, all heater unit (A7) components are switched off
Deactivate heater mode from the standby mode
If fuel is not supplied until the heater unit (A7) is deactivated or the heater unit (A7) is in the stage "OFF", the heater unit (A7) is switched off immediately without activating the hot air blower fan motor (A7m1) (cold blow phase).
-----------------------------------------------------------------------------------------
Manual mode without timer
Deactivate heater unit (A7)
The ON/OFF button for the auxiliary heater (35) must be pressed. Deactivation is indicated in the display field (31) of the STH warm air timer (N35) by extinguishing the "Stationary heater mode" display (28).
Program timer
Erase switch-on time
Press the "Switch-on time, weekday and timer" (36) button until the number in the "Activated switch-on times" display (30) in the display field (31) of the STH warm air timer (N35) is erased.
Only the currently displayed switch-on time can be erased.
-----------------------------------------------------------------------------------------
Heater unit (A7) switch-off malfunction
A shutoff takes place if one of the following conditions exists:
In case of undervoltage (U < 10.5 V) or overvoltage
(U > 16 V), the heater unit (A7) is switched off after 20 s
When the overheating and flame sensor unit (A7r3) is defective or the electrical line to the overheating and flame sensor unit (A7r3) is interrupted, the heater unit (A7) is started and only switched off during the startup phase
If the hot air blower fan motor (A7m1) does not start or if the speed deviates min. 10 %, the heater unit (A7) is switched off after = 30 s
After a malfunction switch-off, the actuation of the warm air STH fuel metering pump (M46/2) is interrupted and the hot air blower fan motor (A7m1) continues to run for
t = 4 min.
Glow pin, location/task | |||
Heat exchanger, location/task/design | |||
Fuel metering pump, location/task/design | |||
Combustion air/hot air blower, location/task/design | |||
Burner insert with burner tube, location/task/design | |||
Auxiliary heating control unit (ZHE), location/task | |||
Auxiliary heater (ZHE) switch clock, location/task/design | |||
Overheating and flame sensor, location/task | |||
Auxiliary heater unit (ZHE), location/task/design |
Referenced documents
- gf8370s4005s Glow pin, location/task
- gf8370s4017s Heat exchanger, location/task/design
- gf8370s4023sa Fuel metering pump, location/task/design
- gf8370s4027s Combustion air/hot air blower, location/task/design
- gf8370s4029s Burner insert with burner tube, location/task/design
- gf8370s4105s Auxiliary heater control unit (ZHE), location/task
- gf8370s4120s Auxiliary heater (ZHE) switch clock, location/task/design
- gf8370s4125s Overheating and flame sensor, location/task
- gf8370s4130s Auxiliary heater unit (ZHE), location/task/design