Dectron, Inc. March 2012
Owner’s Manual
DSH/DSV/RSH/DBH/RBH Series Dehumidifier
Alarms Troubleshooting Service
Data subject to change without notice.
285
DECTRON
ALARM POSSIBLE CAUSES CHECKS & CORRECTIONS
A/C LOW WATER
FAULT
Reduction of cooling water flow.
• Be sure the correct water flow is present.
Water pressure switch incorrectly
adjusted.
• Adjust switch. See section Startup - Adjust
Flow Switches.
BLOWER OVERLOAD
Cabinet doors left open
• Close all cabinet doors. Reset overload.
Excessive airflow
• Be sure airflow is as specified on unit
nameplate.
Blower motor current too high
Overload device manual switch is
OFF
Check switch position visually.
• Press the OFF switch, then press the ON
switch.
Unexpected open switch circuit
Check for loose terminals on overload device
auxiliary switch.
• Tighten as necessary
Check for continuity of overload device auxiliary
switch
• Replace as necessary
Defective overload device
Replace overload device as necessary.
Contact Dectron or your Dectron representative for
referral to a Dectron-certified technician.
Check that the blower motor current is not higher
than the unit nameplate value.
• Adjust the branch circuit voltage to the
nameplate value ±10%.
• Adjust the blower sheaves to produce design
airflow.
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