G&F Manufacturing R-410A Service Manual - Board Diagnostics
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Option: Even Heat (Disabled)
Will periodically turn pool pump on according to delay setting. Options are: Off, 0 Hr
(for testing), 1 Hr, 2 Hr, 3 Hr, 4 Hr, Default is off
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Option: Temperature scale (F)
Sets display for Centigrade or Fahrenheit. Use arrows to toggle.
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Option: Defrost Mode (Air Defrost)
Options are Air Defrost and Reverse Cycle. This option is set at the factory.
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Option: Evaporator Temperature Calibration
For calibrating the defrost sensor located on the suction line. If this calibration is
changed it will show by how much in plus or minus at bottom of display.
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Option: Water Temperature Calibration
This option is for calibrating the water temperature sensor and will show the amount of
calibration in plus or minus at the bottom of display.
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Option: Load Defaults
In this mode you can reload all defaults by pressing the up arrow once.
Board Diagnostics
The control board will alert you to most problems.
DISPLAY MESSAGES
No Flow
Means the water pressure switch is not closed. Check water flow to heater. Make sure any
water bypass valves are not redirecting water around heater, filter is clean, pump is on, and
water level in pool is up in the middle of the pool tile, this prevents skimmer from sucking air
Defrosting
Means the suction line has dropped to 28 degrees. It will shut the unit down until it reaches
40 degrees and the system will run again.
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