L F (Flame Detection); L E Or H E (Board Error) - IDEAL istor HE260 Installation And Servicing

97 L.....F....... (FLAME DETECTION)
If the boiler reset button is
pressed does the boiler ignite
for a short time then extinguish?
YES
Check the detection electrode and
associated harness for:
continuity, visual condition, position
(Refer to Frame 70).
Replace if necessary.
Replace ignition electrode and associated harness as necessary
Note. Due to the wave form of the rectified voltage, the reading will vary depending on the type of meter used to measure the
value (some may measure the possible peak voltage of 339V). In general terms a reading greater than 150V indicate
that the correct voltage is supplied to the gas valve.
98 L.....E or
Check for an excess voltage between neutral
and earth. Is the value below 50V?
LE ONLY: Check continuity of OH thermostat.
Is this correct?
HE ONLY: Check earth wire is connected to
detection lead. Is this correct?
Check all earths for continuity
Internal fault within the PCB
66
FAULT FINDING
NO
Check the ignition electrode and associated harness
for:
Are these functioning correctly ?
NO
H.....E...... (BOARD ERROR)
YES
YES
YES
YES
Is 17mbar gas pressure
available at the boiler inlet ?
YES
Is 200V DC supply
available at the gas valve ?
(see Note)
YES
continuity, visual condition, position
(Refer to Frame 69).
Replace gas valve
Check earth connection to the boiler. If
NO
value is still in excess of 50V consult a
Qualified Electrician to check the
household electrical supply & circuitry.
NO
Correct wiring or replace thermostat
NO
Correct wiring or replace detection lead
NO
Press and hold reset button for 2 seconds.
Does boiler operate correctly?
NO
Turn boiler off and wait for 5 seconds. Turn
boiler on. Does boiler operate correctly?
NO
Replace PCB
istor system store -
NO
Check gas supply
and rectify fault
NO
Check gas valve
wiring for
continuity
Replace PCB
Check syphon
and condensate
drain pipework
YES
for blockage
Correct connections
YES
YES
Installation and Servicing
OK
OK