
26
FLOW CHART 1: START/POWER UP FAULT FINDING
FLOW CHART 2: IGNITION SYSTEM FAULT FINDING
YES
YES
Is APS in closed
position
Check overheat thermostat and
RESET if necessary
YES
When fan stops is
red LED (Safety lockout)
illuminating?
YES
YES
Replace flow switch
Check water pressure. Switch
mains off to reset flow switch.
Does green LED continue to blink
When fan stops is green
LED (Power ON) blinking?
YES
NO
YES
Is APS in closed
position?
Is 230V present across
pins 7 and 8 on X6?
Replace
PCB
NO
Start
YES
YES
NO
YES
YES
NO
NO
NO
YES
NO
NO
Is 230V present across
pins 1 and 2 on X1
Gain access to boiler
control then switch on
electrical supply
Turn Main Switch to
Heating & Water mode
Is green LED (Power ON)
illuminating?
Activate a heat demand via
Timer/Roomstat or open
a hot water tap
Is the pump running?
Is the fan running?
NO
Replace APS
Re-check main connector at
the back including fused outlet
Check PCB F4 Amp fuse, if
blown replace. If fuse OK
replace board
Check pump rotation
Is 230V present across
pins 1 and 3 on X3?
Replace
PCB
Replace fan
YES
Start
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
Is green LED (Power ON)
illuminating, primary flow
switch contacts closed?
Replace
flow switch
Turn Mains Switch to
Heating and Water mode
PCB should carry out APS,
pump flow switch and
overheat checks
Is red LED (Safety Lockout)
illuminating?
Are sparks present at
the spark electrode?
Is the burner light and
the green LED (Burner ON)
illuminated?
Does burner remain lit?
Ignition sequence complete
Is green LED (Power ON)
blinking
See Chart 1
Is spark gap distance to
burner as described in Fig. 35?
Re-adjust as necessary
Is 230V DC present across
pins 4 & 3 0n X6
Check polarity, i.e. is Live and
Neutral to boiler crossed
Check Detection electrode.
Replace as necessary
Check water pressure.Switch
mains off to reset flow switch.
Does green LED continue to blink.
Replace PCB
Replace gas valve
Replace PCB
Note: An anti-cycle timer is built into the control system. If the appliance does not light, wait a
minimum of three minutes before restarting the boiler.
Содержание Ace High
Страница 8: ...8 EXPLODED DIAGRAM for key no references see spare parts catalogue Drawing amended 8 6 00 6 ...
Страница 25: ...INTERNAL WIRING DIAGRAMS 7 7 1 FUNCTIONAL FLOW WIRING DIAGRAM 23 ...
Страница 26: ...7 2 ILLUSTRATED WIRING DIAGRAM 24 ...
Страница 40: ...Ace Ace High Wickes Combi 82 102 05 04 ACE ACE HIGH WICKES COMBI 82 102 ...