Owner Troubleshooting; Owner Troubleshooting Procedure; Fault Display Codes & Possible Owner Actions; [Flo] - Aquacal Aerotemp AT100 Owner's Manual

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Installation & service manual (27 pages)

Installation & service manual (27 pages)

Table of Contents

WARNING !

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.

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.

Code

Error Description

[dPO]

Defrost Sensor Open

[PO]

Water Temperature

Sensor Open

[dPC]

Defrost sensor shorted

[PC]

Water temperature

sensor shorted

[LP]

Refrigerant system low

pressure switch open

[HP]

Refrigerant system high

pressure switch open

[FLO]

Low or no water flow

detected

[FS]

Heater in defrost mode

[CSE]

Control system error