Dectron, Inc. March 2012
DECTRON
Owner’s Manual
DSH/DSV/RSH/DBH/RBH Series Dehumidifier
Data subject to change without notice.
309
Diagnostics-Mechanical Service
Low compressor oil
pressure
(continued)
Low condenser pressure
Low oil level in crankcase
• Check for and correct any refrigerant leaks.
Assure that proper steps have been taken
to assure oil return. See installation
diagram.
Room air temperature too low
• Adjust set point to value shown on unit
nameplate.
High suction pressure
Room air temperature above
normal can cause an increased
load on the evaporator.
• Adjust set point to value shown on unit
nameplate.
Room relative humidity above
normal can cause increased load
on the evaporator.
• Adjust set point to value shown on unit
nameplate.
A closed evaporator-bypass
damper can cause high air
velocities in the evaporator.
• Open the bypass damper whenever the
room air temperature is above 78°F.
Improper duct design can cause
high air velocities in the
evaporator.
• See the Installation section of this manual.
Correct duct design as necessary.
Excessive total airflow can cause
high air velocities in the
evaporator.
• Set total airflow by test to the value shown
on unit nameplate.
Room humidity too low
• Adjust set point to value shown on unit
nameplate.
• Assure that outdoor air intake is not
excessive.
Pool temperature too low
• Reduce water flow rate slightly until a
reasonable temperature is achieved.
ORI valve (water heating
intensity) incorrectly set
• Turn the valve adjustment counter-clock-
wise until spindle is flush with housing.
Turn the valve clockwise approximately 7.5
turns. The condenser pressure will depend
on the refrigerant. Refer to chart in Startup
section.
Insufficient refrigerant in system
• Add refrigerant to eliminate bubbles in the
sight glass in all modes.
SYMPTOM POSSIBLE CAUSES CHECKS & CORRECTIONS
Problems not indicated by Supervisaire
®
Controller
To Next Page
Loading...
Need help?
General
