36
remeha W40/60-m ECO
Description
Cause/checkpoints
0 0.
Flame simulation
Check ionisation probe (distance 3 - 4 mm).
0 1.
Short-circuit 24V
Check wiring.
0 2.
No flame
a. no ignition spark (visible through inspection glass).
or no ionisation
Check:
- connection of ignition cable and spark plug cap.
(after 3 starts)
- ignition cable and electrode for breakdown.
- electrode distance; must be 3-4 mm.
b. ignition spark, but no flame.
Check if:
- gas cock is open.
- inlet gas pressure is sufficient.
- gas pipe is vented.
- gas valve is energized during ignition.
- electrode is fitted properly.
- the gas/air ratio is not correct (see para. 10.1)
- the gas pipe is not clogged or shows an assembly fault.
c. flame, but no ionisation.
0 4
Control fault
Voltage failure when malfunction causes interlock.
0 8.
Air transport
a. Fouling/clogging of the air supply, flue gas discharge or heat exchanger;
b. Differential air pressure switch does not function:
- differential air pressure switch defective.
- gas/air connections loose or clogged.
- gas/air connections mixed up.
- spring loaded damper (fig. 06, pos. 7) does not open.
1 2.
Control fault
Fuse F1 (3.15 AT) defective.
1 8.
Max. water
Flow temperature too high.
1 9.
temperature
Return temperature too high.
2 4.
Temperature
a. Flow and return temperature sensors mixed up.
sensor fault
b. Flow and return connections mixed up.
c. Water flow in D.H.W. mode not correct.
2 5.
Maximum water
Rise in flow temperature too fast.
temperature
Check:
- circulation pump (position 1 or 2)
- water flow through the unit (sufficient number of radiators opened)
- water pressure (0.8 bar min).
2 8.
Fan does not run
Fan defective or improperly fitted (mechanically or electrically).
Fuse F2 (3.15 AT) defective.
Transformer defective (power on X3?)
2 9.
Fan keeps running
a. electrical connections mixed up.
b. electrical connections interrupted.
3 0.
Max. water temp.
Difference between flow and return temperature too high
3 1.
Temp.sensor fault
Short-circuit in flow temperature sensor.
3 2.
Short-circuit in return temperature sensor.
3 6.
Flow temperature sensor defective or not connected.
3 7.
Return temperature sensor defective or not connected.
4 3.
Parameters out
Check the parameter settings.
of reach
6 1.
Air transport
Air differential switch does not open:
- Air differential switch defective
- Extreme draft through flue gas discharge duct
- Short-circuit in wiring.
Note:
Not mentioned codes refer to internal control errors,
requiring the control box to be changed.
