Remeha
Quinta 45/65
54
[
Description
Cause/check points and remedy
0)
Flame simula-
tion
- Gas valve shuts but burner surface continues to glow
due to incorrect combustion.
- Gas valve off but leaking on shut-down - burner flame
continuing.
0!
Short circuit
24V
Check wiring.
0@
No flame or no
ionisation (after
5 start attemps)
Note:
Ionisation
measurement
in Volts bet-
ween terminal
4 and earth
(1V dc
≡
1
µ
A dc)
No ignition spark, check:
- connection of ignition cable and spark plug cap
- ignition cable and electrode for insulation breakdown
- electrode gap; must be 3 - 4 mm
- earth continuity
Ignition spark, but no flame, check if:
- gas cock is open
- inlet gas pressure is sufficient
- gas pipe is vented (special attention for LPG use)
- gas valve is energised during ignition and also opens
- electrode is fitted properly, is clean and set
- the gas/air ratio is correct
(see Par. 9.1)
- the gas pipe is not clogged or incorrectly sized
- the air supply and flue outlet is free of obstructions
- if the condensate siphon is clear
- there is no flue gas recirculation (internal/external)
Flame, but no or insufficient (<4
µ
A) ionisation. Check
flame:
- is flame core visible?
- is flame geometry stable?
- Check CO
2
at both part and full flame
- Check ignition probe earthing
- Check temperature sensors for loss current (humidty
on sensors)
Visual check of ignition/ionisation probes:
- if white oxydes show, use sand paper or screwdriver
for cleansing
- check geometry and distance between both probes,
i.e. 3 to 4 mm.
0$
Voltage failure after lock out condition – original lock out
cause will not be displayed – check read out table for
additional fault code,
ref. Par. 6.9
0%
External influ-
ence
- power or control supply affected by external EMC
– check for EMC conformity
