DECTRON
Dectron, Inc. March 2012
DSH/DSV/RSH/DBH/RBH Series Dehumidifier Owner’s Manual
Data subject to change without notice.
286
ALARM POSSIBLE CAUSES CHECKS & CORRECTIONS
COMPRESSOR X HIGH
PRESSURE FAULT,
where “X” is a place-
holder. Your display will
actually show a number
associated with a partic-
ular refrigeration circuit.
Loss of cooling water on water-
cooled units
• Be sure water flow is correct. See
Startup - Adjust Flow Switches.
• Be sure the cooling water temperature is not
above that stated on the unit nameplate.
• Consult Dectron or a Dectron-certified
technician.
Loss of airflow in remote
condensers on air-cooled units
Improperly adjusted pressure
control valve(s)
• Consult Dectron or a Dectron-certified
technician.
Defective high pressure switch
• Be sure set points correspond to those
shown on the unit nameplate.
• Be sure controller outputs are not calling for
heating. See unit wiring diagram.
Return air temperature too high
• This will be most common in warm weather.
Be sure the total refrigerant charge corre-
sponds to the amount shown on the unit
nameplate.
Excess refrigerant
• Be sure all isolation valves are opened.
Manual isolation valves not
opened at installation
• Be sure reheat coil is not coated with foreign
materials such as dirt from unfiltered outdoor
air or scum from spas / hot tubs.
• Be sure reheat coil is not corroded.
Corrosion is due to poor chemical storage or
excessive chloramine production.
Fouled or damaged reheat coil
• Be sure the remote condenser safety switch
is ON. Be sure that all fuses (if any) are good.
• For polyphase condensers, be sure that all
phases are present. Be sure the fans turn
the proper direction.
• Be sure that there are no walls, fences,
bushes, or other airflow interruptions near
the remote condenser. See Installation -
Locate Remote Condenser.
• Be sure the remote condenser is clean.
Service Troubleshooting Alarms
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