Sealey AB100E - Manual (Page 5)

6.9. Fuse Replacement
NOTE: This is a fuse protected heater.
If the heater fails to ignite, check the fuse as shown in fig.14, before contacting your
local service agent.
 WARNING! unplug the heater from the mains power supply before attempting any
maintenance work.
6.9.1. remove the control panel screws and lift off the side panel to reveal the printed circuit
board.
6.9.2. Disconnect switch wires from the power switch.
6.9.3. remove fuse from holder as shown.
6.9.4. replace fuse with one of the same specification and rating.

WARNING! dO NOT substitute the fuse with one of a higher or lower rating as this
may result in a fire hazard.
6.9.5. reconnect switch wires to the power switch.
6.9.6. replace side panel.
fig.14 Fuse Replacement
AB70E, AB100E Issue: 1 - 05/04/12 Original Language Version
Problem Possible Cause Solution
Heater fires, but main
PcB shuts heater off after
a short period of time.
Lamp is flickering.
1. Incorrect pump pressure. 1. Adjust pump pressure (see fig.3).
2. Dirty input, output or lint filter. 2. clean/replace Air filter.
3. Dirty fuel filter. 3. clean/replace fuel filter.
4. nozzle is dirty. 4. clean/replace nozzle.
5. Photocell lens is dirty. 5. clean/replace Photocell.
6. Photocell not installed properly. 6. Adjust Photocell position.
7. Photocell defective. 7. replace Photocell.
8. Improper electrical connection between
main PcB and photocell.
9. Ambient temperature too low for fuel type,
8. check wiring connections.
9.change fuel type.
Heater will not operate or
motor runs for a short time.
Lamp flickers.
1. no fuel in fuel tank. 1. fill tank with fresh fuel.
2. Incorrect pump pressure. 2. Adjust pump pressure (see fig.3).
3. corroded spark plug or incorrect gap. 3. clean/adjust/replace spark plug.
4. Dirty fuel filter. 4. Clean/replace fuel filter.
5. Dirty nozzle. 5. clean/replace nozzle.
6. Moisture in fuel/fuel tank. 6. rinse out fuel tank with fresh fuel.
7. faulty electrical connection. 7. Inspect all electrical connections.
8. Ignitor wire not connected to spark plug. 8. re-attach ignitor wire to spark plug.
9. Defective ignitor. 9. replace ignitor.
fan does not operate when
heater is plugged in and
Power switch is in the “on”
position. The lamp is flickering
or on.
1. Broken electrical connection between main
PcB and motor.
1. Inspect all electrical connections.
Poor combustion. 1. flames extending beyond heater. 1. Decrease pump pressure (see fig.3).
2. Low heat output. 2. Increase pump pressure (see fig.3).
Heater does not turn on and
the lamp is not lit.
1. temperature limit sensor has overheated. 1. Push power switch to “off” and allow heater to cool for
10 minutes. Push power switch to “on”.
2. no electrical power. 2. check power cable and extension cable connections. test
power supply.
3. fuse blown on PcB. 3. Check/replace fuse (see fig.14).
4. faulty connection between temperature limit
sensor and PcB.
4. Inspect all electrical connections.
 WARNING! This heater is not suitable for use with Bio-Diesel; use of Bio-Diesel will damage the filter and seals.
Damage caused by use of Bio-Diesel will not be covered by warranty.
7. TROUBLESHOOTING