Heatmaster 201 manual Safety Stop Error Mode, Mcba For Specialists Installer, Service Engineer

MCBA FOR SPECIALISTS: INSTALLER, SERVICE ENGINEER

SAFETY STOP (ERROR MODE)

If a fault occurs while the appliance is running, the system locks and the screen starts to flash. The first character is an E and the next two characters give the code for this fault, as illustratedin the table below.

To unlock the system:

•Press RESET on the screen.

•Contact your installer if the fault happens again.

Table of error codes and how to resolve them
Codes	Description of the fault	Resolution of the fault
	Abnormal flame signal	- Check the wiring (short-circuit in the 24V wiring)
		- Check the electrode/ replace the MCBA (water damage).
		- Check the ignition cable, the electrode and the
	No flame signal after five attempts at firing the boiler	position of the electrode.
		- Check that there is gas at the burner.
	Persistent lock	- Press RESET
	EPROM error	-If the problem persists after two RESET attempts,
		replace the MCBA.
	Max input, thermostat open or 24V fuse gone.	- Check the wiring and check the
		24V fuse on the MCBA.
To	Internal error	- If the problem persists after two RESET attempts,
		replace the MCBA.
	T1 > 110°C	- Check the NTC wiring and replace if necessary.
	T2 > 110°C	- Check the NTC wiring and replace if necessary.
	T1 gradient too high	- Check that the pump is turning. If there is
		no problem with the pump, drain the system.
		- If the fan is working:
		• Check the fan control connection and the fan wiring
		• if the problem persists after 2 RESET attempts, replace the
		fan
	No fan signal present	• if the problem persists, replace the MCBA.
		- If the fan is not working:
		• Check that the fan 230V connection. If the problem persists,
		replace the fan.
	NTC 1 short-circuit	- Check the connection and the NTC1 wiring
		If the problem persists, replace the NTC1.
	NTC 2 short-circuit	- Check the connection and the NTC2 wiring
		If the problem persists, replace the NTC2.
	NTC 3 short-circuit	- Check the connection and the NTC3 wiring
		If the problem persists, replace the NTC3.
	NTC 1 connection open	- Check the connection and the NTC1 wiring
		If the problem persists, replace the NTC1.
	NTC 2 connection open	- Check the connection and the NTC2 wiring
		If the problem persists, replace the NTC2.
	NTC 3 connection open	- Check the connection and the NTC3 wiring
		If the problem persists, replace the NTC3.
	Internal error	- If the problem persists after two RESET attempts,
		replace the MCBA.
	Error while reading the parameters	Press RESET. If the error persists, replace the MCBA.
	Problem with the power supply to the fan	Check the MCBA power supply voltage. If it is OK, replace
		the fan.
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