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Code | Description | Remedy |
b1 | Code plug not detected | Insert code plug correctly, test and replace if necessary |
C6 | Fan speed too low. | Check fan lead and connector, and fan; replace as necessary. |
E2 | CH flow NTC sensor defective. | Check CH flow NTC sensor and connecting lead. |
E9 | Safety temperature limiter in CH flow has tripped. | Check system pressure, check safety temp. limiters, check pump operation, check fuse on pcb, bleed appliance. |
EA | Flame not detected. | Is gas cock turned on? Check gas supply pressure, power supply, igniter electrode and lead, ionisation sensing electrode and lead, flue duct and CO2 level. |
F0 | Internal error. | Check electrical connector contacts, programmer inter-face module ignition leads are not loose; replace pcb if necessary. |
F7 | Flame detected even though appliance switched off. | Check electrode assembly, dry pcb. Flue clear? |
FA | Flame detected after gas shut off. | Check gas valve and wiring to gas valve. Clean condensation trap and check electrode assembly. Flue clear? |
Fd | Reset button pressed by mistake | Press reset button again |