Fault Codes - Aquacal T030 Installation Manual

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 contact AquaCal. See "Contacting AquaCal AutoPilot, Inc."
on page 1.
WARNING
Repairs must not be attempted by untrained or unqualified individuals.
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The heat pump contains refrigerant under high pressure. Repairs to the refrigerant circuit must not be attempted
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by untrained or unqualified individuals. Service must be performed only by qualified HVAC technicians. Recover
refrigerant before opening the system.
NOTICE
Service by unauthorized personnel will void the heat pump warranty.
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FLOW LED is off
ISSUE
Low or no water detected.
RESOLUTION
1. Confirm the filter pump is on.
2. If a multiple-speed filter pump is being used, run at a higher speed to determine if the error persists. Do
not exceed the maximum flow rate for your model.
3. Confirm water is not being diverted away from the heat pump.
See "Water Flow Rates" on page 9.
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DEFROST LED is on
ISSUE
The heat pump has sensed the evaporator coil is icing up.
RESOLUTION
PASSIVE DEFROST
When ice starts to form on the coil, the compressor will stop operating while the fan continues to
operate.
When the coil's temperature rises above 38° F, the compressor is restarted and heating resumes.
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If the coil's temperature remains below 38° F, the compressor will remain off.
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Failure to heed the following may result in injury or death.
Failure to heed the following may result in damage to equipment.
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