Hyundai HY155HPW-1 Instruction Manual page 20

Repair - Replace the seals.
- Replace the piston.
- Replace the seal.
Fault Filtrations of oil from the drains be-
tween head and casing
Cause - O-ring seals of casing are worn out.
Repair - Replace the seals.
Fault Turning on the burner switch the
boiler does not start
Cause - No fuel.
- Fuel filter is clogged.
- Fuel pump is either blocked or burnt out.
- Damaged thermostat.
- Ignition spark insufficient or totally lacking.
- The space among the electrodes is not
correct.
- Burn out fuse.
Repair - Check the level in the tank and check
whether the rigid suction pipe is clean.
- Replace the line filter.
- Replace it.
- Replace it.
- Contact an authorised service centre.
- Check the positioning.
- Replace it.
Fault Water is not hot enough
Cause - Poor boiler performance.
- Boiler coil clogged with limestone.
Re-
- Clean burner nozzle filter.
pair
- Clean fuel filter.
- Check diesel pump pressure.
- Descaling.
Fault Too much smoke from the chimney
Cause - Combustion is not correct.
- Impurities or water in the fuel.
Re-
- Clean fuel filter.
pair
- Clean the boiler.
- Empty the tank and clean it carefully.
- Clean fuel filter as well.
Insufficient detergent suction
Fault
Cause - No detergent in the tank.
- Incrusted injector.
- Either coil or tube or lance are clogged.
Re-
- Fill the detergent tank.
pair
- Clean it.
- Either cleaning or descaling.
EN
20