Troubleshooting Using Displayed Codes - Aquacal Heatwave Manual Del Propietario Y Guía De Instalación

Controls Configuration & Adjustments...
The HP7R heat pump microprocessor controller is designed to be self-diagnostic through the display
of various fault codes.
Owners & Operators: If you believe you are experiencing a problem with the heater, and feel a need to
call the factory for assistance, it will be beneficial to let the factory Service Representative know which
code is being displayed. Having this information at hand will permit the Service Representative to work
through–with you–any site related issues causing or contributing to the problem. Then, if after working
through site-related issues the heater is still not functioning correctly, the Service Representative will
offer to set up a service visit. As necessary, please Contact AquaCal Customer Support Group (800-
786-7751).
Dealers and Service Centers: For troubleshooting use, listed below are all possible fault messages
output by the microprocessor, what the codes mean, and possible causes with solutions for the
indicated problem. Please contact AquaCal Technical Support Group, as necessary (800-786-7751).
WARNING !
Heat pumps contain no owner or operator repairable components. Repairs must not be
attempted by untrained and/or unqualified individuals. If service is deemed necessary, contact
installing dealer or AquaCal Customer Support at (800) 786-7751.
Message Error Description
[dPO] Defrost Sensor Open
W ater Tem perature Sensor
[PO]
[dPC] Defrost Sensor Shorted
W ater Tem perature Sensor
[PC]
Refrigerant System Low
[LP]
Pressure Switch Open
Refrigerant System High
[HP]
Pressure Switch Open
5 High Pressure Faults W ithin
[HP5] One (1) Call for Heating or
Cooling (Lock Out Condition)
5 Low Pressure Faults W ithin
[LP5] One (1) Call for Heating or
Cooling (Lock Out Condition)
Over Tem perature Alarm <
[OTA] Tem perature over 110
Low or No W ater Flow
[FLO]
[FS] Heater in Defrost Mode
(H
[CSE] Control System Error
[CEr] Com m unication Fault

Troubleshooting Using Displayed Codes

Interpreting Error Codes
Failure to heed the following may result in permanent
injury or death.
Open
Shorted
o
F (Unit
Locked)
Detected
-O U )
EAT NLY NITS
Possible Cause
Cut or loose sensor wiring
Cut or loose sensor wiring
Short circuit in defrost sensor wiring or defective sensor.
Short circuit in water tem perature sensor or defective sensor.
System refrigerant charge low, defective low pressure switch, clogged
evaporator coil, or defective wiring.
Low water flow, defective high pressure switch, or defective wiring.
See causes for [HP]
See causes for [LP]
Defective com pressor contactor, defective controller, or defective
water tem perature sensor.
Circulating pum p off, water filter dirty, isolation valves set improperly,
or defective pressure switch.
Normal function in lower air tem peratures. Fan continues to run and
compressor is off. Compressor will restart when air-coil tem perature
o
reaches 38 F or above.
Controller may need to be reset. Disconnect then reconnect power to
controller. If error continues, replace control board, display board, or
both.
Loss of com munication between main board and display board. Reset
controller or replace com munication cable.
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