Honeywell TrueDRY DR90 Serie Guia De Instalacion página 21

Troubleshooting (continued)
DR90/120 Service Diagnostic Tree
Short Cycles (every couple of minutes)
JUMP "R" AND DEHU"
ON TERMINAL BLOCK
DOES THE
DEHUMIDIFIER
SHORT CYCLE NOW?
YES
DO THE FAN AND
COMPRESSOR
CYCLE TOGETHER
OR DOES THE FAN
STAY ON?
CYCLE
TOGETHER
TrueDry DR90/DR120 Dehumidification System 69-2690EFS—04
NO
REMOVE BACK PANEL AND
CHECK VOLTAGE ON
FAN COMPRESSOR RELAY
STAYS (BLACK WIRES) DURING
ON COMPRESSOR OFF CYCLE
CHECK VOLTAGE AT
DEFROST PROBE
DURING COMPRESSOR
OFF CYCLE
CHECK VOLTAGE AT
COMPRESSOR
OVERLOAD
IS 120V PRESENT
ON COMPRESSOR NO
RELAY OUTPUT?
YES
IS 120V PRESENT
NO
ON DEFROST
PROBE?
YES
IS 120V PRESENT
NO
ON COMPRESSOR
OVERLOAD?
YES
WAIT FOR SHORT
CYCLING TO REOCCUR
AND RETEST
REPLACE COMPRESSOR
RELAY AND RETEST
PERFORMANCE OF UNIT
REPLACE DEFROST
PROBE AND RETEST
PERFORMANCE OF UNIT
REPLACE COMPRESSOR
OVERLOAD AND RETEST
PERFORMANCE OF UNIT
REPLACE COMPRESSOR
REPLACE ONBOARD
DEHUMIDISTAT
M33761
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