55
EVOMAX
-
Installation & Servicing
FAULT FINDING
F
AUL
T FINDING F
AUL
T FINDING F
AUL
T FINDING F
AUL
T FINDING F
AUL
T FINDING F
AUL
T FINDING
Overheat Lockout
Fill System to 1 Bar
Vent System
Check Pump Spins Free
Reset Boiler
69
FAULT FINDING CHART - MAIN MENU
Go to Frame70
Overheat Lockout
Go to Frame 71
Ignition Lockout
Too Many Resets
Turn Boiler Power Off
Turn Boiler Power On
5 resets within 15 mins
Turn power off and on
Go to Frame 72
False Flame Lockout
Go to Frame 73
Low Water Pressure
Go to Frame 74
Flame Loss
Fan Fault
Check Fan Wiring
Check Fan
Go to Frame 75
Fan Fault
Return Thmr Fault
Check Return
Thermistor Wiring
Check Return Thmr
(10K @ 25°C,2K at 66°C)
Go to Frame 77
Return Thermistor Fault
Outside Sensor Fault
Check Outside Sensor
Wiring
Check Outside Sensor
(10K @ 25°C,2K at 66°C)
Go to Frame 78
Outside Sensor Fault
Low Mains Voltage
Less than 160V
Check Local Generator
Contact Electricity
Provider
Contact
Electricity Provider
PCB Fault
Ensure BCC fitted
Replace PCB
Replace Main
PCB
Flow/Return Reversed
Check Pump
Check System Pipework
Go to Frame 79
Flow/Return Reversed
Cylinder Thermistor Fault
Check Cylinder
Thermistor Wiring
Check Cylinder Thmr
(10K @ 25°C,2K at 66°C)
Go to Frame 80
CylinderThermistor Fault
Ext’ Interlock Off
External Interlock
Operated
Reset Interlock
Go to Frame 81
Ext’ Interlock Off
Ignition Lockout
Check Gas to Boiler
Check Condensate Pipe
Refer to Instructions
Reset Boiler
False Flame Lockout
Check Flame Sense
Electrode
Check Flame Sense
Electrode Wiring
Low Water Pressure
Fill System to 1 Bar
Vent System
Flame Loss
Check Gas to Boiler
Check Condensate Pipe
Check Flue System
Flow Thermistor Fault
Check Flow Thermistor
Wiring
Check Flow Thermistor
(10K @ 25°C,2K at 66°C)
Go to Frame 76
Flow Thermistor Fault
BCC Fault
Ensure BCC fitted
correctly
Replace BCC
Go to Frame 82
BCC Fault
No CH but DHW OK
Go to Frame 83
No CH but DHW OK
No DHW but CH OK
Go to Frame 84
No DHW but CH OK
Blank Display
Go to Frame 85
Blank Display
CH Continues to run when
Timer is off
Ensure Night Setback
not enabled.
See Frame 37
Flow Temperature Setpoint
cannot be increased to 82°C
Ensure Flow Temp is
not limited within Installer
Mode. See Frame 38
Flow Temperature Setpoint
cannot be reduced to 80°C
Ensure Flow Temp is
not limited within Installer
Mode. Go to Frame 38
Pump runs during the night
Ensure system Frost
Protection Temp Setpoint
is not set too high.
Go to Frame 33
Boiler does not respond to
0-10V Input
Go to Frame 86
0-10V Interface
DHW Thermistor used and
DHW does not end
Error 20
Ensure boiler set for
DHW Thermistor
See Frame 39
Go to Frame 72
False Flame Lockout
