Glow-worm Ultimate 100FF - Manual (Page 29)

29 221966B
FUSE
TYPE F1 & F2
(F1A)
AIR PRESSURE SWITCH CONNECTIONS
SPARK
ELECTRODE
WATER PRESSURE
SWITCH
O/H CUTOFF
CONTROL
STAT
FAN
AIR
PRESSURE
SWITCH
PILOT
SOLENOID
MAIN
SOLENOID
N
N
N
N
N
N
N
(N/O) (C)
(N/C)
L
K2
K1
N/C
C
N
N
b
w
g
w
br
p
y y
r b
r
bk
b
y
br b
b bk
b
KEY
bk BLACK
br BROWN
b BLUE
p PURPLE
g GREY or ORANGE
w WHITE
r RED
y YELLOW
SL
MAIN TERMINAL STRIP CONNECTIONS
CONTROL THERMOSTAT CONNECTIONS
PRINTED CIRCUIT BOARD CONNECTIONS
FULLY PUMPED OPEN VENTED
OR SEALED WATER SYSTEM
PN
9
P
L
PUMP
br b
br br
b
b
* RED
LINK
* Remove red link between 9 and SL when
fitting a time control etc (if no switch is fitted,
link will make the circulation pump run constantly)
** LInk fitted to bridge out water pressure switch
for open vented system.
F1 F2
or
or
or
p
** LINK
Diagram 11.4
11 Fault Finding
Diagram 11.3
Pump overrun Operation for Fully
Pumped System Only
YES NO
Faulty PCB. Replace
Does pump stop after several minutes ?
YES
Does the pump run when SL is applied ?
Does pump continue to run after SL is interrupted ?
NO
NO
System satisfactory.
YES
The PCB has a pump overrun facility.
The pump should run for several minutes after remote controls have stopped calling for heat.
Before using the fault finding chart ensure all wiring is correct and in good condition, the pump
is not faulty and check the PCB fuse F2.
FOR FULLY PUMPED OPEN VENTED
OR SEALED WATER SYSTEMS ONLY