Honeywell TrueDRY DR90 Professional Installation Manual page 19

Troubleshooting (continued)
DR90/120 Service Diagnostic Tree
Running all the time, does make water
DEHUMIDIFIER NEVER
TURNS OFF, DOES
MAKE WATER
DR90/120 Service Diagnostic Tree
Too noisy or vibrates too much
REMOVE EXTERNAL DEHUMIDISTAT
WIRING FROM "DEHU" AND "R"
ON TERMINAL BLOCK.
JUMP "R" AND "F" TO TURN FAN ONLY ON
TrueDry DR90/DR120 Dehumidification System 69-2690EFS—04
REMOVE EXTERNAL
DEHUMIDISTAT WIRING
FROM "DEHU" AND "R"
ON TERMINAL BLOCK
IS THE NOISE OR
VIBRATION PRESENT?
JUMP "R" AND "DEHU"
TO RUN COMPRESSOR
AND FAN
IS THE NOISE OR
VIBRATION PRESENT?
IS THE DEHUMIDIFIER
NO
RUNNING NOW?
YES
YES
NO
YES
NO
CHECK OPERATION
OF EXTERNAL
DEHUMIDISTAT
CALL TECHNICAL
SUPPORT
M33758
REMOVE BACK PANEL
AND INSPECT FOR
MECHANICAL FAN
BINDING OR VIBRATION
REMOVE BACK PANEL
AND INSPECT
REFRIGERATION LINES
AND COMPRESSOR.
REPAIR AND RETEST
FOR NOISE
PROBABLE RELAY OR
DEFROST ISSUE
M33759
17