Problem Probable Cause Suggested Remedy
No water in generator
Water supply is "OFF" Turn on water supply
Clogged strainer Clean or replace strainer screen
Control voltage disconnected Restore control voltage
Defective ON/OFF control switch Check/replace control switch
Defective water solenoid valve Check/replace water solenoid valve
Defective PC Board Check/replace PC Board
Water feed probe not functioning Check/replace water feed probe
probe isolator and/or MM150
(Models 360-1400) and
(Models CU2000 & higher)
Clogged isolator tube Check/replace isolator tube
(Models 360-1400)
Generator does not heat
Power supply disconnected Restore power supply
No water in generator See above
Hi-Limit pressure control tripped Clean out syphon tube & reset
pressure control
LWCO not functioning Check/replace LWCO probe
Defective contactor Check/replace contactor
Defective pressure control Check/replace control switch
Defective PC Board Check/replace PC Board
Defective heating element Check/replace heating element
Contactor chatters
Defective PC board Check/replace PC Board
Generator
fl
oods
Water feed solenoid Reverse solenoid connection
installed backwards CU360-1400 Port “1” towards generator;
2" towards water supply CU2000
and larger, “IN” port towards water
supply
Defective water solenoid valve Check/replace water solenoid valve
Defective PC Board Check/replace board
Water feed probe
(Models 360-1400)
Check/replace water feed probe
not functioning and isolator
Clogged isolator tube Check/replace isolator tube
(Models 360-1400)
MM 150
(Models CU2000 and higher)
Clean out pipes under MM 150
is clogged Equalizing piping and float chamber
CU81600 rotates twice
Jumper in (X) BRN & BLK Check/remove jumper (page 16)
terminals not removed
Blowdown opens randomly
Blowdown timer in random mode See Random Function note on page 29
Digital Blowdown Timer
Timer’s backup battery has Power up the timer and press the
has no power after boiler
been drained rest button with a blunt object
being turned off
mr
.
steam
®
C U S E R I E S
Installation, Operating & Maintenance Manual
TROUBLE SHOOTING
32
To prevent risk of electric shock, trouble shooting should be done only by a qualified licensed electrician
