Bard I48H1D Manual De Usuario
Manual
2100-549G
Page
51 of 59
TROUBLESHOOTING
SOLID STATE HEAT PUMP CONTROL
TROUBLESHOOTING PROCEDURE
TROUBLESHOOTING PROCEDURE
1. NOTE: A thorough understanding of the defrost
cycle sequence is essential. Review that section
earlier in this manual prior to troubleshooting the
control. Turn on AC power supply to unit.
earlier in this manual prior to troubleshooting the
control. Turn on AC power supply to unit.
2. Turn thermostat blower switch to “fan on” – the
indoor blower should start. (If it doesn’t,
troubleshoot indoor unit and correct problem.)
troubleshoot indoor unit and correct problem.)
3. Turn thermostat blower to “auto” position. Indoor
blower should stop.
4. Set system switch to “heat” or “cool”. Adjust
thermostat to call for heat or cool. The indoor
blower, compressor and outdoor fan should start.
blower, compressor and outdoor fan should start.
NOTE: If there was no power to 24 volt transformer,
the compressor and outdoor fan motor will
not start for 5 minutes. This is because of
the compressor short cycle protection.
not start for 5 minutes. This is because of
the compressor short cycle protection.
CODES
FUNCTION
Slow Blink
Normal Operation
Fast Blink
Compressor Time Delay
1 Blink
Low Pressure Switch Failure
2 Blink
High Pressure Switch Failure
or Condensate Overflow
Switch Activated
or Condensate Overflow
Switch Activated
3 Blink
Defrost Mode Active
4 Blink
High Pressure Soft Lockout
TABLE 5
TROUBLESHOOTING
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