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Is the air being discharged
out of the top of the heater 9-12
degrees cooler than the
outside air?
START
Is the air being discharged
out of the top of the heater 9-12
degrees cooler than the
outside air?
Is the pool pump timer
set to allow extended
operation of the heater?
Is the pool pump timer
set to allow extended
operation of the heater?
Yes
Extend the pool pump's
hours of operation to
accommodate additional
heater run time required
in cooler conditions.
Extend the pool pump's
hours of operation to
accommodate additional
heater run time required
in cooler conditions.
Is the heater
performing
adequately?
Is the heater
performing
adequately?
Problem
Solved.
Problem
Solved.
No
Yes
Is the defrost light on, or
does the display read : "FS" ?
Is the defrost light on, or
does the display read : "FS" ?
No
Yes
The defrost light or "FS"
displayed indicates air
temperature may be too low
to support the heater's
operation. Heater will
remain in defrost until air
temperature rises.
The defrost light or "FS"
displayed indicates air
temperature may be too low
to support the heater's
operation. Heater will
remain in defrost until air
temperature rises.
Call AquaCal for
Assistance:
800-786-7751.
Call AquaCal for
Assistance:
800-786-7751.
No
Yes
No
Is the air Temp. above
40ºF (analog control)
or
38ºF (digital control)
?
Is the air Temp. above
40ºF (analog control)
or
38ºF (digital control)
?
Yes
No
Problem
Solved.
Problem
Solved.
Ambient
conditions too cold
to operate heater.
Ambient
conditions too cold
to operate heater.
Heater Running but Not Heating
Analog or Digital Controls - 12/22/03