REMEHA Quinta 30 Technical Information page 55

0$
External
0%
influence
Setting failure
0*
Failure of
1!
internal
communication
bus
External
1@
interlock
Flow
1*
temperature too
high
Return
1(
temperature too
high
Return temp >
2$
flow temp
Fan not running - Fan or motor failed
2*
Fan runs
2(
continuously or
speed signal
not correct
Temperature
3!
sensor failure
3@
3$
3^
3&
Setting failure
4)
Ionisation
7&
failure during
boiler operation
Other Control box
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.
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.
- power or control supply affected by external EMC –
check for EMC conformity
- check parameter D (second digit must be 0)
- short circuit in flat cable: replace flat cable
- water/condensation on display
- possibly external EMC contamination
- The external interlock (terminals 10 and 14) open circuit
: check external shut-off or replace link between
terminals 10 and 14.
- Fuse F2 failed
Check:
- the waterflow, ref. Par. 7.4.7.
- system for trapped air
- sensors for resistance at set temperature, see graph in
Fig. 22.
- if the boiler is full of water (min. pressure 0.8 bar)
- Flow sensor badly installed
- Pump operating in wrong direction or flow and return
connections crossed
- Supply and/or signal control cable – poor connections
or failed.
- Check control cable connections and for continuity
- Fan defective
- Flue draft conditions too high
Flow temperature sensor short circuit
Return temperature sensor short short circuit
Outside temperature sensor short short circuit
Flow temperature sensor not connected or open circuit
Return temperature sensor not connected or open circuit
check parameter D (first digit must be 0)
After 4 restarts during 1 heat demand
- flue gas recirculation (internal/external)
- insufficient air flow – check fan or air inlet/flue outlet for
55
obstruction
- incorrect combustion.
Fault-codes: 3, 6, 7, 10, 13, 14, 15, 16,