Service manual

28
ERROR MESSAGES
Code
Displayed
Fault Remedy
- Noticeable reduction in water flow Inlet water filter needs to be cleaned.
03
Power interruption during operation (water
will not flow when power returned)
Turn off all hot water taps and circulating pumps.
Press ‘On/Off’ twice
10
Not enough combustion air
Check for physical blockages around air intake or
exhaust. Check combustion fan.
Diagnostic page 29
11
No Ignition / Gas supply
Check Burner Pressure p25 gas valves p32, gas
supply, ignition & ionisation electrodes p31
Diagnostic p29
12
Flame failure / Earth Leakage
Check gas valves and gas supply.
Check flame rod.
Check earth wire lead.
Check remote control.
Diagnostics p29
14
Thermal Fuse & or Overheat
Check Overheat circuit inc Thermal link p29
Check dip switches p22
Check gas Pressures p26
16
Over temperature warning
Check Gas Type dip switches p22
Check gas pressure p26
Check flow servo diagnostic p29
Check flow sensor diagnostic p29
Check Heat ex outlet thermistor diagnostic p29
Check Hot Water outlet thermistor diagnostic p29
32
Outgoing water temperature sensor faulty Check Hot Water outlet thermistor diagnostic p29
33
Heat exchanger outlet sensor faulty Check Heat ex outlet thermistor diagnostic p29
34
Combustion Air Temperature Sensor faulty Check Thermistor p34 Diagnostic p29
52
Gas modulating valve faulty Check Gas valve p32 Diagnostic p29
61
Combustion fan failure Check fan p34 Diagnostic p29
65
Water flow control faulty, Water flow not
controlled or temp too low Check Water Flow Servo p35 Diagnostic p29
71
Solenoid Circuit error Check Gas valve p32 Diagnostic p29
72
Flame rod circuit error Check electrode p32 Diagnostic p29
LC (00)***
Scale build-up in heat exchanger De-scale or Replace Heat Exchanger
For extra assistance in Fault Diagnostics follow the FLOW CHART of page 21