Chaffoteaux et Maury
Britony Combi 80&100
| Problem | Solution |
| Noise and modulating quickly | There is a strainer filter in the plastic housing on the right in the return connection, these clog up |
| No ingition, pump and fan running | Primary thermistor can fail causing ignition problems |
| Pressure swings | Expansion vessel hose can block causing excess pressure |
| Water leaks on Left Hand Side | The left hand hydraulic block can have a hairline crack causing intermittent water leaks from left hand side |
Britony Combi SE Range
| Problem | Solution |
| Lockout | Faulty low water pressure switch can cause ignition lockout |
| Low water pressure switch | Take note when ordering, that there are two available for this appliance, screw in and push in |
Calydra
| Problem | Solution |
| No heating | Any hot water demand will stop heating from coming on, disconnect heat bank stat, and also water flow switch to eliminate |
| Pumps | Original pump had five wires, you may disregard the red and white wires when changing for a new pump as they are not required, just make them safe |
| Pump and Fan running, no ignition | Check primary flow switch is making and also thermistors are in range |
Celtic Range
| Problem | Solution |
| Pressure swings | Check vessel precharge, should be 0.5bar, check flexible hose for blockages Air vent can leak into discharge pipe Calorifier can pinhole internally causing mains water pressure into central heating circuit |
| Boiler or pump on with no demand | Check the two frost stats on the fan bracket white wire stat should be open circuit above 11 degrees, purple wire stat should have continuity above 3 degrees |
| Poor Hot Water | If not going to high fire check the hot water thermostat, may be open circuit |
| Fan running no ignition | May be air pressure problems, check for a slow fan, dirty heat exchanger, make sure air pressure switch is seated correctly, and small venturi pipe is clear |