Aquacal GBB BB500, Operation Manual

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3.1 Fault Codes
A fault code indicates a specific issue or condition that will require action before the equipment can resume
operating.
Please perform the following troubleshooting.
If the issue reoccurs, please see "Contacting AquaCal AutoPilot, Inc." on page 1.
WARNING
Failure to heed the following may result in injury or death.
l
Repairs must not be attempted by untrained or unqualified individuals.
l
The heat pump contains refrigerant under high pressure. Repairs to the refrigerant circuit must not be attempted by
untrained or unqualified individuals. Service must be performed only by qualified HVAC technicians. Recover
refrigerant before opening the system.
NOTICE
Failure to heed the following may result in damage to equipment.
l
Service by unauthorized personnel will void the heat pump warranty.
AIR TEMP SENSOR OPEN
or
AIR TEMP SENSOR SHORT
ISSUE
Open or shorted air sensor.
RESOLUTION
A qualified technician should replace the air sensor.
CLOCK LOW BATTERY
ISSUE
The real-time clock controller indicates a low battery condition.
l
The time will reset to factory default.
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If connected, a gas backup heater may start and stop at an incorrect time when set for "SCHEDULED"
mode.
RESOLUTION
A qualified technician should replace the battery. The date and time will need to be reset on the heat
pump after replacement.
DEFROST1 SENSOR OPEN
or
DEFROST2 SENSOR OPEN
ISSUE
Open defrost sensor.
RESOLUTION
A qualified technician should replace the defrost sensor.
DEFROST1 SENSOR SHORT
or
DEFROST2 SENSOR SHORT
ISSUE
Shorted defrost sensor.
RESOLUTION
A qualified technician should replace the defrost sensor.
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