WSHP-SVX014J-EN
63
Troubleshooting
WARNING
Hazardous Service Procedures!
Failure to follow all precautions in this manual and on
the tags, stickers, and labels could result in death or
serious injury.
Technicians, in order to protect themselves from
potential electrical, mechanical, and chemical
hazards, MUST follow precautions in this manual and
on the tags, stickers, and labels, as well as the
following instructions: Unless specified otherwise,
disconnect all electrical power including remote
disconnect and discharge all energy storing devices
such as capacitors before servicing. Follow proper
lockout/tagout procedures to ensure the power can
not be inadvertently energized. When necessary to
work with live electrical components, have a qualified
licensed electrician or other individual who has been
trained in handling live electrical components perform
these tasks.
Deluxe Controls
Troubleshooting units which contain the deluxe control
option may be made easy by using the three LEDs (light
emitting diodes). These LEDs are provided for indicating
the operating mode of the controller. The LEDs are
intended to aid in troubleshooting. The LEDs are labeled
on the circuit board with numbers as referenced in the table
below.
Table 47. Diagnostic LEDs
Color: Green Color: Red Controller Mode
LED1 LED2 LED3
OFF OFF OFF Control OFF
ON OFF OFF
Normal/Compressor OFF
ON OFF FLASH
Anti-short cycle
ON OFF ON
Normal/Compressor ON
FLASH ON OFF Brownout Condition
ON FLASH ON
Soft Lockout (low pressure)
ON FLASH FLASH
Soft Lockout (high pressure)
ON ON ON
Manual Lockout (low pressure)
ON ON FLASH
Manual Lockout (high pressure)
ON FLASH OFF
Manual Lockout (condensate overflow)
ON ON OFF
Compressor Disable
Table 48. Troubleshooting table
Problem
Heat-
ing
Cool-
ing
Cause Correction
No response to any thermostat
setting
X X
Main power off
Check fuses
X X Defective control transformer
Replace
X X Broken or loose connection
Repair
X X Defective thermostat
Replace
X X Transformer Reset Transformer
Unit short cycles
X X
Thermostat or sensor improperly located
Relocate
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