Troubleshooting Chart 10 - UTICA BOILERS UCS-240 Installation, Operation & Maintenance Manual

Note: This error code refers
to the onboard low water
pressure switch, not any
field installed external low
water cutoff device.
Is low water pressure sensor
Replace Sensor.
OK
Done
13 - TROUBLE SHOOTING

Troubleshooting Chart 10

Check system water pressure
with tridicator or other device. Is
water pressure at least 15 psig?
Check wire harness
connections are secure
NOT OK
OK
Secure Wire
Harness
Connections
(item 12 in wiring diagram)
securely installed to block?
NO
Yes
Correct
Installation
NOT OK
Replace Control
Board
E42 - Low Water Pressure
NO
YES
accurate. Correct water
pressure and/or correct
86
The error code is
system leaks.
P/N 240011654, Rev. C [06/08/2017]