Radiant RBS 20 E Installation And Maintenance Manual - page 20
Installation Manual
COMBI – Cod. 99941NA – November 2002
17
SHORT LIST
n° CODE
DESCRIPTION
RBS 20 E
Electronic Ignition
1
58008LA
MAIN HEAT EXCHANGER
2
36066LA
ELECTRONIC GAS VALVE VK4105 G1112
3
76631LA
ELECTRONIC IGNITION BOARD S4565QM1012
4
76646LA
PRINTED CIRCUIT BOARD SM 20013
5
73507LA
HEATING SENSOR / HOT WATER SENSOR 1/8”
6
24027LA
CIRCULATING PUMP GOLD 50V1 SHU CLF6 W/AIR VENT (Only for UK and Ireland)
7
24030LA
CIRCULATING PUMP MOTOR GOLD 50V1 SHU CLF6 (Only for UK and Ireland)
8
95014LA
EXPANSION VESSEL
9
59010LA
WATER PRESSURE SWITCH
10
96030LA
AUTOMATIC AIR VENT VALVE 5020 3/8’’
11
96007LA FLOWSWITCH
12
37012LA
EXHAUST FAN
13
59006LB
AIR PRESSURE SWITCH C6065AH1095
14
21001LA
BURNER 13 R. 1,25 NATURAL GAS
15
86027LA
SAFETY THERMOSTAT 90°C
16
47021LA
3 POSITION COMMUTATOR SWITCH R11C2X401
9
1
14
10
8
2
3
15
11
16
12
4
5
17
13
6
7
FAULT POSSIBLE
CAUSE REMEDY
1)the boiler electrical power is on, the pump
circulates and the fan runs but the flame doesn’t
ignite and the boiler does not lock-out.
a. air pressure switch
a.
replace it
2)the pump circulates and the fan runs but the flame
does not ignite, there is no sparkling and after 10
seconds the boiler locks- out.
b. limit thermostat 90°c
b.
replace it
3)the boiler has stopped, everything is locked-out,
only water pressure indicators 1-1.5 are on.
c. heating sensor damaged
c.
replace it
4)the boiler ignites but only at the minimum power. d. ignition board wires reserved (colour: grey-
brown)
d.
connect properly
5)the pump circulates and the fan runs, the flame
ignites but after 10 seconds stops and locks-out.
e. live-neutral wires inverted,
f.
ionisation electrode damaged
g. ignition board damaged
h. no earth, electrical supply live-live
e.
connect properly
f.
replace it
g.
replace it
h.
make proper earth connection
6) the boiler ignites, the temperature rises very fast
and the boiler locks-out.
i.
circulating pump broken
i.
replace it
7)the boiler is off, lights are off, everything is off.
j.
no electrical power
k. water pressure switch broken
j.
check boiler power supply
k.
replace it
8)the pump circulates but the fan doesn’t run, no
lock-out.
l.
exhaust fan broken
m. air pressure switch faulty
l.
replace it
m. replace it
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