Technical data

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.