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OWNER TROUBLESHOOTING
Owner Troubleshooting Procedure:
Note…
This procedure is restricted to problems which may be related to the control system of your heater,
and/or site conditions affecting the ability of the control system to properly start and run your
heater. For other suspected problems, such as (but not limited to): “Heater Leaking Water”,
“Heating, but Not Heating Enough”, etc….Please refer to the heater Owner’s Manual.
Insure correct water flow to the heater: Valves properly set, filter clean, and pump running;
1. Check heater power supply: All breakers and disconnect switches turned ON;
2. At this point, if no display is seen on heater control panel, call AquaCal Customer Support;
3. If display is now showing current water temperature, proceed with programming (Turn back
to Section Entitled: START UP & SETTING OPERATING CONTROLS.).
4. If display is NOT blank, but is NOT displaying current water temperature, but IS displaying
“Flo”, re-verify correct water flow through unit. If water flow is correct, and “Flo” still
displays, contact AquaCal customer support.
Fault Display Codes & Possible Owner Actions
Code Error Description Owner Actions
[dPO]
Defrost Sensor Open Contact installing dealer or Aquacal Customer Support
[PO]
Water Temperature
Sensor Open
Contact installing dealer or Aquacal Customer Support
[dPC]
Defrost sensor shorted Contact installing dealer or Aquacal Customer Support
[PC]
Water temperature
sensor shorted
Contact installing dealer or Aquacal Customer Support
[LP]
Refrigerant system low
pressure switch open
Contact installing dealer or Aquacal Customer Support
[HP]
Refrigerant system high
pressure switch open
Contact installing dealer or Aquacal Customer Support
[FLO]
Low or no water flow
detected
If correct flow has been determined per item #1 above- – Contact installing
dealer or Aquacal Customer Support
[FS]
Heater in defrost mode Normal function in lower air temperatures. Fan continues to run and
compressor is off. Compressor will restart when air coil temperature
reaches 38°F or above. If heater remains in defrost– Contact installing
dealer or Aquacal Customer Support
[CSE]
Control system error Controller may need to be reset. Disconnect then reconnect power to
heater; if error continues– Contact installing dealer or Aquacal Customer
Support
Failure to heed the following can result in
permanent injury or death.
Heater contains no owner-repairable parts. Do NOT exceed the troubleshooting
actions explained below. If explained owner-troubleshooting fails to correct the
problem, do NOT attempt repairs to the heater…Contact your installing dealer or
AquaCal Customer Support: 1
-
800
-
786
-
7751.
WARNING !