10. Failure repair
In case of device failure, the list provided below might help in locating in. Removal is usually
simply. Potential problems are specified below. The numbers indicate the possible causes. The order of numbers
shows the probability of failure.
CAUTION:
Unplug the device prior to commencement of any activities.
FAILURE
The pump fails to launch
The flame goes out and the pump keeps working
Noise from the combustion chamber.
Soot in the combustion chamber and stack.
Unburnt oil left on the combustion plate.
CAUSE
6-3-7
2-5-9-10-12
10-11-12
8-9-10-11-12
8-9-11-1 or excess of diesel
oil during start-up.
No.
CAUSE
SOLUTION
1
No power supply.
• Check if the plug is in the socket and check
fuses
2
Water or deposit in the tank.
• Clean the tank and filter.
3
The pump motor does not turn on.
• Check STB and overflow protection.
4
The motor and pump do not operate.
•
The fuel is too thick or too cold.
Dilute with diesel oil.
•
Check the pump control thermostat
and replace it if needed.
•
Check the motor and see if the pump
is not soiled on the inside.
•
Check STB and overflow protection.
5
The fuel ducts is obstructed, oil
returns to the tank through the primary duct
• Clean the fuel duct and replace it.
6
The pump operation control thermostat has
not reached proper temperature.
•
Wait until the furnace cools down and restart it
•
Replace the thermostat.
7
The overflow protection is full
• Clean it.
8
The safety thermostat (STB) does
not operate properly or at all
•
Reset the thermostat
•
Replace it.
9
Insufficient combustion air inflow
•
Clean the furnace chamber openings.
•
Check proper operation of the fan.
10
Improper draught.
•
Check if the stack pipe is mounted according to
recommendations in point 7a
•
Check tightness of the stack system.
•
Clean if necessary.
11
The stack draught is too strong or
alternates too much.
• Install the draught stabiliser
and adjust it to min. 2 mm W.C. (19.6 Pa).
12
The stack draught is too weak.
•
Check all connections.
•
Decrease the number of bends.
•
Elongate the stack.
•
Insulate the stack pipe outside the building
•
Review all information regarding
the stack duct in the Manual.
