Aquacal 101 Manual Do Utilizador

51

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).

Failure to heed the following may result in permanent
injury or death.

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.

(H

EAT

-O

NLY

  U

NITS

)

[dPO] 

Defrost Sensor Open 

Cut or loose sensor wiring 

[PO] 

W ater Tem perature Sensor 

Open 

Cut or loose sensor wiring 

[dPC] 

Defrost Sensor Shorted 

Short circuit in defrost sensor wiring or defective sensor. 

[PC] 

W ater Tem perature Sensor 

Shorted 

Short circuit in water tem perature sensor or defective sensor. 

[LP] 

Refrigerant System  Low 

Pressure Switch Open 

System  refrigerant charge low, defective low pressure switch, clogged 
evaporator coil, or defective wiring. 

[HP] 

Refrigerant System  High 

Pressure Switch Open 

Low water flow, defective high pressure switch, or defective wiring. 

[HP5] 

5 High Pressure Faults W ithin 

One (1) Call for Heating or 

Cooling (Lock Out Condition) 

See causes for [HP] 

[LP5] 

5 Low Pressure Faults W ithin 

One (1) Call for Heating or 

Cooling (Lock Out Condition) 

See causes for [LP] 

[OTA] 

Over Tem perature Alarm < 

Tem perature over 110

o

F (Unit 

Locked) 

Defective com pressor contactor, defective controller, or defective 
water tem perature sensor. 

[FLO] 

Low or No W ater Flow 

Detected 

Circulating pum p off, water filter dirty, isolation valves set improperly, 
or defective pressure switch. 

[FS] 

Heater in Defrost Mode 

Norm al function in lower air tem peratures. Fan continues to run and 
compressor is off. Com pressor will restart when air-coil tem perature 
reaches 38

o

F or above. 

[CSE] 

Control System  Error 

Controller m ay need to be reset. Disconnect then reconnect power to 
controller. If error continues, replace control board, display board, or 
both. 

[CEr] Com m unication 

Fault 

Loss of com m unication between main board and display board. Reset 
controller or replace com m unication cable.