Grant Boilerhouse fault 2
Burner pulses
Oil boilerWhat it means
Burner exhibits pulsing behaviour during operation, indicating unstable combustion conditions.
Likely causes
- Insufficient air supply
- Poor condition of the fan
- Inadequate room ventilation
- Incorrect nozzle size and type
- Debris, leaves, hair, fluff accumulation in air inlet cover and air damper
- Debris accumulation on fan impeller and fan housing
- Contamination in oil pump filter
Where to start
- Verify N (Neutral) is not connected to any terminal on either thermostat
- Ensure links and connector to link Neutral wires are supplied and fitted by installer
- Confirm correct polarity and phase connections at wiring centre terminals 1-10
The full answer, free
- 63 more checks in order
- The readings and component tests from the manual
- How to put it right, step by step
- The manual page for this fault (page 46), right under the answer
Safety: Isolate oil and power before you touch the burner. Do a combustion test after any burner adjustment or part change. OFTEC (or equivalent) work only.
From the Grant manual for the Boilerhouse. Check the model on the data plate before you order parts.