mr. steam CU-2000 - Troubleshooting; Common Problems and Solutions

mr
.
steam
®
C U S E R I E S Installation, Operating & Maintenance Manual
28
TROUBLE SHOOTING
To prevent risk of electric shock, trouble shooting should be done only by a qualified licensed electrician
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Problem Probable Cause Suggested Remedy
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No water in generator Water supply is "OFF" Turn on water supply
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Clogged strainer Clean or replace strainer screen
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Control voltage disconnected Restore control voltage
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Defective ON/OFF control switch Check/replace control switch
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Defective water solenoid valve Check/replace water solenoid valve
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Defective PC Board Check/replace PC Board
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Water feed probe not functioning Check/replace water feed probe (Models 360-1400) and
probe isolator and/or MM150 (Models CU2000 & higher)
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Clogged isolator tube Check/replace isolator tube (models 360-1400)
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Generator does not heat Power supply disconnected Restore power supply
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No water in generator See above
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Hi-Limit pressure control tripped Clean out syphon tube & reset pressure control
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LWCO not functioning Check/replace LWCO probe
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Defective contactor Check/replace contactor
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Defective pressure control Check/replace control switch
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Defective PC Board Check/replace PC Board
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Defective heating element Check/replace heating element
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Contactor chatters Defective PC board Check/replace PC Board
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Generator floods Water feed solenoid Reverse solenoid connection
installed backwards CU 360-1400 Port “1” towards generator;
2" towards water supply
CU2000 and larger, “IN” port towards water supply
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Defective water solenoid valve Check/replace water solenoid valve
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Defective PC Board Check/replace board
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Water feed probe (Models 360-1400) Check/replace water feed probe
not functioning and isolator
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Clogged isolator tube Check/replace isolator tube (models 360-1400)
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MM 150 (Models CU 2000 and higher) Clean out pipes under MM 150
is clogged Equalizing piping and float chamber
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CU81600 rotates twice Jumper in (X) BRN & BLK Check/remove jumper (page 17)
terminals not removed
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CAUTION
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