| Error code | Possible fault | Installer action | |
|---|---|---|---|
| FLASHED Green 1 TIME | Boiler temp reached | ||
| 3 GREEN FLASHES | Temporary Flame Loss (No Reset Required) | Temporary error, self reset, if continues will go to 3 red flashes (lockout). | |
| 4 GREEN FLASHES | Communication Fault Between PCB And Control | Temporary error, self reset. | |
| 5 GREEN FLASHES | Parameter Error On PSU/PCB | Temporary error, self reset. | |
| 6 GREEN FLASHES | Miscellaneous Error | Temporary error, self reset. | |
| ONE RED FLASH | Sensor Error: Sensor Fault, Temperature Fault Or Flow Fault | Check The Wiring; Check That The Sensors Are 12kohms @ 25 degrees c ; Check That The Sensor is fitted into toe pocket; Check that the AAV is open; Check that the system is full of water and any air cleared; Check that the pump is running and that the flow and return is the right way round. Check for blockages in the system. | |
| 2 RED FLASHES | Boiler Overheat Tripped | Vent The Air In The Heating System; Check The Water Pressure; Check continuity across the overheat stat and that the A.P.S is operating (if fitted); Check The Circulation (Direction, Pump, Valves); Check The Wiring; Check System Pressure and That System Is Not Air-Locked. | |
| 3 RED FLASHES | Ignition Fault. Boiler Has Failed To Light After 5 Attempts | Check The Wiring; Check The Supply Pressure; Purge The Gas Supply To Remove Air; Check for spark at electrode; Check Ignition Electrode Condition and Clean/Replace If Necessary; Check Gas Valve is opening; Check Condensate Drain For Blockage. | |
| 4 RED FLASHES | Fan Fault | If fan is not running check for power to gas air unit; if the fan is running check A.P.S (if fitted) has operated. Check flue for blockages. | |
| 5 RED FLASHES | Parameter Or PSU Error | PCB And Condition Of Wiring Loom; Replace PSU And Recommission; Check The Wiring. | |
| FLASHES RED 6 TIMES | Miscellaneous | Check All Wiring Connections Are Correctly Made; If Necessary Replace PU And/or Control/Fan Assy. |