
Johnson & Starley Boiler Error Codes 2021
Johnson & Starley Boiler Error Images
Fault Image | System Behaviour |
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Ignition lockout |
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High limit error |
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No tacho from fan |
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High flue gas tempurature |
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Flame circuit error |
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Valve drive circuit error |
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Dual sensor error |
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Default lockout |
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Remote reset lockout |
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ADC error |
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CRC error – SW switch |
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Flame signal lost 5 times in 4 minutes. |
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Boiler flow temp sensor open circuit |
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Domestic hot water (DHW) sensor short |
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Domestic hot water (DHW) sensor open |
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Low mains voltage |
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Water pressure error |
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OpenTherm sensor shorted to earth |
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Water pressure too high |
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No water pressure signal recievced fom MMI |
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Boiler return temp. sensor open circuit |
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Flue gas temperature sensor short |
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Flue gas temperature sensor open circuit |
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Communication MMI – CVBC lost |
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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