HAMWORTHY HEATING LTD
WARMWELL
500001091/F
Figure 12.2a Fault Finding Procedures
Initial Start Procedure
Is the fan running ?
Yes
Yes
Continued
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
Is mains power lamp lit
On the fascia ?
Has the ignition
controller reset ?
Has the Low Fire Air
Pressure Switch proved ?
Neon N 10 illuminated on
main PCB.
E
Is there a glow at the HSI
probe ? Green neon on
fascia panel illuminated.
Is the temperature limiter
reset ? (Indicated on the
fascia as Overheat)
Check the operation of
and
the
Low
Gas
Press Switch (LPG only) .
the
Condense Level
Switch
Is there a demand from the
thermostat ?
Is neon Ne7 illuminated on
the main PCB ?
Is remote control link
16 (1-2) secure ?
CN
Replace ignition
controller
Check fuse(s) time clock
on/off switch etc.
Re-set ignition
controller (Lockout
button on fascia).
Check thermostats.
Check air pressure
switches, sensing pipes
and pressure switch
connecting tubes.
Check that the probe and
electrode connections are
secure and sound.
Re-set temperature
limiter (Limit Stat)
Is 230V present at pins
1 & 2 (C 11) and pins
1 & 3 (C 10) on main PCB.
N
N
Check and turn
thermostat to maximum.
Check connections to
exhaust panel and fan
motor
Check and close
remote circuit.
No
No
No
Yes
.
Float
34
Summary of Contents for Warmwell 120
Page 50: ...HAMWORTHY HEATING LTD WARMWELL 500001091 F NOTES 44...
Page 51: ...Notes...
