Errors

• - select type -
• Trinity Fire Tube (Tft110)
• Trinity Fire Tube (Tft200)
• Trinity Fire Tube (Tft250)
• Trinity Fire Tube (Tft300)
• Trinity Fire Tube (Tft399)
• Trinity Fire Tube (Tft55)
• Trinity Fire Tube (Tft60)
• Trinity Fire Tube (Tft75)
• Trinity Fire Tube (Tft85)
• Trinity Lx150
• Trinity Lx150E
• Trinity Lx200
• Trinity Lx300
• Trinity Lx400
• Trinity Lx500
• Trinity Lx600
• Trinity Lx700
• Trinity Lx800
• Trinity TX101
• Trinity TX151
• Trinity TX151C
• Trinity TX200
• Trinity TX200C
• Trinity TX51
• Trinity TX81
• Vmax (VM110)
• Vmax plus (VM110P)

• - select code -
• Alert 128
• Alert 206
• Alert 233
• Alert 248
• Alert 311
• Hold 27
• Hold 61
• Hold 62
• Hold 63
• Hold 65
• Hold 66
• Hold 67
• Hold 79
• Hold 81
• Hold 85
• Hold 88
• Hold 91
• Hold 92
• Hold 95
• Lockout 109
• Lockout 113
• Lockout 122
• Lockout 173
• Lockout 174
• Lockout 2
• Lockout 65
• Lockout 67
• Lockout 79
• Lockout 81
• Lockout 82
• Lockout 85
• Lockout 88
• Lockout 9
• System disconnected

Boiler type Trinity Lx600

Error code Alert 311

Cause:

1. Blocked venting
2. Blocked air inlet
3. Disconnected, damaged or blocked tubing. 
4. Incorrect air switch setting.
5. Blown fuse

Solution:

1. Check for blockage of the exhaust vent.
2. Check for blockage of the air inlet.
3. Inspect the clear vinyl tubing connecting the air switch + and – ports to the air metering elbow. Condensation or other foreign matter may be obstructing the tubing, preventing the switch from sensing differential pressure caused by air flow through the metering elbow.
4. Contact NTI technical support.
5.  Check Fuse "A".