WSHP-SVX01Q-EN
113
Troubleshooting
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
Table 63, p. 113
.
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.
Table 63.
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 64.
Troubleshooting table
Problem
Heating Cooling
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
Blower runs, but compressor does not
X
X
Defective compressor overload
Replace (if external)
X
X
Defective compressor contactor
Replace
X
X
Supply Voltage too low
Correct
X
X
Defective compressor capacitor
Replace
X
X
Defective windings
Replace
X
X
Limit switches open
Check cause/Replace or repair