REMEHA Gas 310 ECO Technical Information page 46

12
Locked input open
17
Gas valve multiblock protection Gas valve multiblock defective or not connected
Flow temperature too high
18
20
Excessive fan speed
28
Fan not operating
Fan keeps running or signal is
29
incorrect
Max. dT exceeded
30
31
Temperature sensor fault
32
Temperature sensor fault
35
Temperature sensor fault
36
Temperature sensor fault
37
Temperature sensor fault
Air pressure differential sensor
38
short circuited
Air pressure differential sensor
39
open
40
Temperature sensor fault
One or more parameters are
43
out of limits
Hydraulic pressure sensor
45
short circuited
Hydraulic pressure sensor
46
open
Maximum flue gas temperature
52
exceeded
Air pressure differential sensor
61
not opening
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- Maximum thermostat (= external protection), connected to terminals
X29-1 and X29-2 on the terminal strip, has tripped or wire bridge has
been removed
- Fuse F3 on automatic burner unit is defective.
Check:
- Flow
- System has been correctly bled
- Temperature sensors for deviations
- Water pressure in the system.
Check:
- Parameters
- Whether fan cable is defective or making poor contact.
If failure persists, fan or control unit may be defective.
- Fan defective
- Fan cable or connector is corroded, resulting in absence of voltage
or control signal.
- Check the fan cable connectors on both the fan and the automatic
burner unit side
- Fan electronics defective
- High natural draught.
Check:
- Flow
- System has been correctly bled
- Water pressure in the system.
Short circuit of flow temperature sensor.
Short circuit of return temperature sensor.
Short circuit of flue gas temperature sensor.
Flow temperature sensor not connected or defective.
Return temperature sensor not connected or defective.
- Check the connecting cable of the air pressure differential sensor
- The air pressure differential sensor is defective or not connected
- Check the air pressure differential sensor connecting cable for short-
circuiting, etc.
- Air pressure differential sensor is defective
Flue gas temperature sensor not connected or defective.
The input of the parameter (s) is incorrect.
- Check the hydraulic pressure sensor connecting cable for short cir-
cuit etc.
- Hydraulic pressure sensor is defective
- Check the connecting cable of the hydraulic pressure sensor
- The hydraulic pressure sensor is defective or not connected
Check the heat exchanger for fouling on the flue gas side.
Air pressure differential sensor not opening. Check the following:
- Is the air pressure differential switch defective
- Has the wiring short circuited
- Check for signs of external thermal draught in the flue gas discharge
duct.
47