UTICA BOILERS UCS-380 Installation, Operation & Maintenance Manual page 83

Check venting for
obstruction (both inlet and
exhaust)
NO
Replace Blower
Assembly
Obstruction
E39 - Shutdown Input In Locked Out Mode
Are the wire connections
secure?
NO
Secure wire
connections
Repair/Replace
External Accessory
Item As Required
13 - TROUBLE SHOOTING
Troubleshooting Chart 7
E34 - Fan Fault
Check all wires including blower
valve are connected and tight
YES
YES
Clear Vent
Troubleshooting Chart 8
Check BL connection on control
board terminal strip. Is this
function being utilized?
YES
YES
Check external
Check external
accessories are
accessories are
correct
YES
NO YES
Replace Control
Board
83
NO
Connect all
wires and
assure secure
fit
NO
Is factory installed jumper
securly in place?
NO
YES
Install jumper
securely in
place
correct
NO
Change Installation
Parameters As
Required
P/N 240011662, Rev. D [06/30/2017]