Hamworthy Warmwell 60 Installation, Commissioning And Servicing Instructions page 40

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