AUTOFLAME Mk8 MM - Lockouts

Lockouts occur when the MM detects a fault with the burner operation such as VPS, gas/air pressure
sensor and flame scanners. The lockout must be cleared and investigated on the MM.
Lockout Message Description
1 CPI Input Wrong State Proof of closure switch opened during ignition sequence
 Check wiring on terminal 55
 Check proof of closure switches
2 No Air Proving No air pressure during start/ firing
 Check wiring on terminal 54
 Check air pressure switch
 Check air pressure sensor
 Check air pressures during running
3 Ignition Output Fault Voltage detected when output is off (and vice versa)
 Check wiring and voltage on terminal 63
4 Motor Output Fault Voltage detected when output is off (and vice versa)
 Check wiring and voltage on terminal 58
5 Start Gas Output Fault Voltage detected when output is off (and vice versa)
 Check wiring and voltage on terminal 59
6 Main Gas 1 Output Fault Voltage detected when output is off (and vice versa)
 Check wiring and voltage on terminal 60
7 Main Gas 2 Output Fault Voltage detected when output is off (and vice versa)
 Check wiring and voltage on terminal 61
8 Vent Valve Output Fault Voltage detected when output is off (and vice versa)
 Check wiring and voltage on terminal 62
9 Failsafe Relay (Check F1) Voltage detected when output is off (and vice versa)
 Check wiring and voltage on terminal 57
 Check fuse 1 (6.3A T) and wiring on terminals 50 – 64
10 Simulated Flame Flame is present when it not should be
 Isolate gas/ oil immediately
 Call a certified Commissioning Engineer to investigate
 If this lockout occurs during shutdown a post-purge may be required for after burn
11 VPS Air Proving Fail Leak detected during ‘air proving’ part of VPS
 Check 1
st
main valve
 Call a certified Commissioning Engineer to investigate
12 VPS Gas Proving Fail Leak detected during ‘gas proving’ part of VPS
 Check option/parameter 133
 Check 2
nd
main gas valve and vent valve
 Check pilot valve if using single valve pilot
 Isolate gas and call a certified Commissioning Engineer to investigate
13 No Flame Signal No flame detected during ignition/ firing
 Visually check flame
 Check the flame scanner
 Call a certified Commissioning Engineer to investigate
14 Shutter Fault UV signal detected during shutter operation on self-check
 Check wiring on terminals 21 and 22
 Check UV scanner type and check option/ parameter 110 is set accordingly
22.05.2017 Mk8 MM End User Guide Page 44
4 Errors and Lockouts
4.2 Lockouts