Johnson & Starley Boiler Error Images

Johnson & Starley Boiler Error Codes

Johnson & Starley Boiler Error Images

Fault Image	System Behaviour
	Ignition lockout
	High limit error
	No tacho from fan
	High flue gas tempurature
	Flame circuit error
	Valve drive circuit error
	Dual sensor error
	Default lockout
	Remote reset lockout
	ADC error
	CRC error – SW switch
	Flame signal lost 5 times in 4 minutes.
	Boiler flow temp sensor open circuit
	Domestic hot water (DHW) sensor short
	Domestic hot water (DHW) sensor open
	Low mains voltage
	Water pressure error
	OpenTherm sensor shorted to earth
	Water pressure too high
	No water pressure signal recievced fom MMI
	Boiler return temp. sensor open circuit
	Flue gas temperature sensor short
	Flue gas temperature sensor open circuit
	Communication MMI – CVBC lost
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Johnson & Starley Boiler Error Codes

Fault Code / Fault Image	System Behaviour
1	Flame lockout after several ignition attempts
2	False flame
3	High water temperature limit
5	No tacho from fan
8	Flame circuit error
9	Valve driver circuit error
11	Flow/return sensor calibration error
12	Default lockout
13	Elapsed the number of retrials
21	ADC error
26	Flame signal lost 5 times in 4 minutes
31	Centra heating supply sensor error (open or short)
44	Central heating rerturn sensor error (open or short)
7	High flue gas tempurature
25	CRC error
30	Boiler flow temprature sensor short circuit
31	Boiler flow temperature sensor open ciruit
32	Domestic hot water temperature sensor short circuit
33	Domestic hot water temperature sensor open circuit
34	Low mains supply voltage
37	Low system water pressure
40	High system water pressure
41	No water pressure signal recievced fom MMI
45	Flue gas temperature sensor short circuit
46	Flue gas temperature sensor open circut
47	Water pressure sensor open circuit
99	Communication MMI -ESYS lost
E01	Ignition lockout
E02	False flame lockout
E03	Overheat lockout
E05	Fan fault
E08	Flame circuit failure
E09	Valve feed back error
E12	EEPROM lockout
E15	Sensor drift lockout
E16, E17, E18	Sensor stuck lockout
E21	ADC lockout
E33	Return thermistor fault
E34	Low power supply lockout
E35	Flow thermistor fault
F07	Exhaust sensor fault
F13	Remote reset lockout
F37	Low water pressure
F40	Water pressure too high
F47	Water pressure sensor not connected
F52	Domestic hot water (DHW) sensor fault
F53	Flue temperature sensor lockout

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