Operation Manual
60
De Dietrich Gas 310/610 ECO
Fan not operating
- Fan defective
- Fan cable is corroded, resulting in absence of voltage or control signal.
Fan operates continuously or signal
incorrect
- Check the fan cable connectors on both the fan and the automatic burner unit
side.
- Fan electronics defective
- Excessive negative chimney pressure
Max ΔT exceeded
Check;
- Flow
- System as has proper air elimination
- Water pressure in the system
Temperature sensor fault Short circuit of flow temperature sensor
Temperature sensor fault Short circuit of return temperature sensor
Temperature sensor fault Short circuit of flue gas temperature sensor
Temperature sensor fault Flow temperature sensor not connected or defective
Temperature sensor fault Return temperature sensor not connected or defective
Air pressure differential sensor short
circuited
- Check the connecting cable of the air pressure differential sensor
- Air pressure differential sensor is defective or not connected
Air pressure differential sensor open
- Check the air pressure differential sensor connecting cable for short circuiting,
etc.
- Air pressure differential sensor is defective
Temperature sensor fault Flue gas temperature sensor not connected or defective
one or more parameters are out of limits The input of the parameter(s) are incorrect
Hydraulic pressure sensor short circuited
- Check the hydraulic pressure sensor connecting cable for short circuit, etc...
- Hydraulic pressure sensor is defective
Hydraulic pressure sensor open
- Check connecting cable of the hydraulic pressure sensor for short circuit, etc...
- The hydraulic pressure sensor is defective or not connected
Maximum flue gas temperature
exceeded
Check the heat exchanger for fouling on the flue gas side
Air pressure differential sensor not
opening
Check;
- Is the air pressure differential sensor defective
- Has the wiring been short circuited
- Excessive positive chimney pressure
Weak flame ionization signal during
operation (after 4 restarts during 1 heat
demand)
- Flue gas recirculation, check venting & heat exchanger for leaks
- Insufficient air flow due to blockage
- Check the boiler settings
Boiler block temperature too high
Check; The heating pump is operating
- There is sufficient water flow through the boiler
- The water pressure is > 11 psi or 0.8 bar
Gas leak VA1 (optional)
The VPS gas leakage control has detected a leak, Check for external leaks,
otherwise replace gas valve multiblock
Gas leak VA2 (optional)
The VPS gas leakage control has detected a leak, Check for external leaks,
otherwise replace gas valve multiblock
Air pressure differential sensor fault
Air pressure differential sensor fault during pre-purge (after 4 restarts)
Check; Is the air pressure differential sensor defective
- Has the wiring short circuited
- Excessive high positive chimney pressure
Boiler block temperature > flow
temperature + hysteresis
Check; - The heating pump is operating
- There is sufficient water flow through the boiler
- The water pressure is < 11 psi or 0.8 bar
Temperature sensor fault Short circuit of boiler block sensor
Temperature sensor fault Boiler shut-off sensor is not connected or defective
Boiler block temperature too high
Check; - The heating pump is operating
- There is sufficient water flow through the boiler
- The water pressure is < 11 psi or 0.8 bar
other
codes
Control unit has internal fault
Proceed as follows with all non-listed codes
- Press the reset button once
- Check that the wiring is not short circuited
- If the fault persists, contact our service department
Table 23 Failure codes
WARNING!! Do not reset the boiler control until you can identify and have resolved the problem. Unresolved problems
could cause personal injury or damage to the boiler and controls.