Aquacal HeatWave SuperQuiet SQ120R, Operation Manual

Page: 44 / 58

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Displays Defrosting
Displays "
DEFROSTING
"
ISSUE
The heat pump has sensed the coil is icing up. See " Ice Forming on the Heat Pump " on page 46.
No action is required.
RESOLUTION
Heat Only Units - Passive Defrost
When ice starts to form on the coil, the compressor will stop operating while the fan continues to
operate.
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The coil will begin to warm to the surrounding air temperature. When the coil's temperature rises
above 38° F (3.3° C), the compressor is restarted and heating resumes.
l
If the coil's temperature remains below 38° F (3.3° C), the compressor will remain off.
Cool Only Units - Passive Defrost
When ice starts to form on the coil, the compressor will stop operating while the fan continues to
operate.
l
The coil will begin to warm to the surrounding air temperature. When the coil's temperature rises
above 38° F (3.3° C), the compressor is restarted and cooling resumes.
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If the coil's temperature remains below 38° F (3.3° C), the compressor will remain off.
Heat and Cool Units - Active Defrost
Hot refrigerant gas will be sent through the coil to rapidly remove ice or frost.
During this process, the melting of the ice may appear as steam coming off the
heat pump. This is normal.
Displays "
NO SYSTEM FIRMWARE
"
ISSUE
The heat pump has encountered a software error.
RESOLUTION
Call for service.
Displays "
NO POOL/SPA WATER FLOW
"
ISSUE
Low or no water detected. This is normal when the circulation pump is deactivated.
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.
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See " Water Flow Rates " on page 26.
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See " Adjusting Water Flow Using ΔT (Delta-T) " on page 27.
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