Aquacal AT120 Heat Pump User Manual


 
10
Sequence of Operation
PUMP OFF
POWER ON
______________________
"FLO" Displayed
PUMP ON
POWER ON
______________________
Water Temp. Displayed
SET POINT BELOW 60ºF
______________________
Heater is "OFF"
Pressing Up-Down
Keys Will Display "OFF",
Water Temp. Displayed
SET POINT ABOVE 60ºF
______________________
Heater in Standby, Waiting
Call for heat
Water Temp. Displayed
CALL for HEAT
______________________
Occurs at Set point + Dead
Band Setting...
Fan Starts
4-MINUTE TIME DELAY
______________________
Compressor Remains Idle,
while Fan Continues to
Operate
COMPRESSOR STARTS
______________________
Compressor & Fan Operate
Until Water Temp. Reaches
Set Point...HEAT LED Lit
(OR UNTIL FAULT OR DEFROST)
HEATING SATISFIED
______________________
Heater Shuts Off when
Water Set Point Reached
20-Second HP Delay
VERSION .07 & UP
_____________________
High Pressure Signals will
be Ignored for 20-Seconds
5-HPs in 1-Hour
VERSION .07 & UP
_____________________
Controller will Lock Out
Heater if more than 5 HP
Signals are Received in
any 1-Hour period
Other Possible Displays
OPERATIONAL CODES
______________________
"FS"...Defrost Mode
Normal Operation in Colder
Weather
FAILURE CODES
______________________
CSE- Control System Error
dPC-Defrost Sensor Shorted
dPO- Defrost Sensor Open
PC- Water Sensor Shorted
PO- Water Sensor Open
LP- Refrigerant Low Pressure
HP5- 5 High Press. Trips < 1Hr
HEATER OFF on CODE
(SEE ABOVE)
Heater will Remain Idle Until
Defrost is Satisfied, or Until
Faults are Cleared
Other Possible Displays
LINK to Codes
LINK to Codes
START
NOTE
VERSION .04 & BELOW
Fan will continue to operate
indefinitely if water temp.
raises into dead band before
compressor starts.
HP-7 (6200P) Sequence of Operation
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M. Mauro, 10/14/03
M. Mauro, 10/14/03