Operational Sequence & Troubleshooting Flow Chart - Calorex DIGITAL LOGIC AT800 Owner Operational Manual

Operational Sequence & Troubleshooting Flow Chart
for "Digital Logic" Digital Control Models
220V Power
Water Pump
To Heater
Timer Activates
Green Power Light
On
Heater
Stays Off
Possible Bad
T-Stat Board, Pot
Does Not Close
or Sensor
Heater Shuts Off High Pressure
HP Displayed
Too Much Refrig.
or Low Water Flow
or Bad Hi Switch
Try Again or
Possible Bad
Time Delay After Delay Period
or Below 45 to 50
Deg. Air Temp
TIME DELAYS
30 second compressor delay when switching pool/spa modes.
5 minute compressor delay when T.C.O. enables in pool mode.
5 minute T.C.O. off delay when: switching from spa to pool mode, when temperature is
reached in pool mode, or if LF (low water flow) is displayed on LED.
If water pump loses prime there will be a 3 minute compressor delay.
Water Pump
Starts Flowing
Water Pressure
SW Closes
Thermostat
Water Temperature
is Above Setting
T-Stat Relay
T-Stat Relay
Fan Starts
To Run, Green
Heating Light On
Low Pressure
Low Pressure
SW Closed
High Pressure
Switch Open
High Pressure
SW Closed
Heater Does Compressor Runs
Not Activate or 3 to 5 Min.
Delay Activates
Compressor Starts
Green Heating
Light ON
Page 12
Water Press. SW
Stays Open
Sensor
Water Temperature
is Below Setting
Closes
Low Pressure
Switch Opens
Switch
LF displayed on LED
All OK
Switch
All OK
Water Rises To
Set Temp.
LF Readout
Displayed on LED
No Water Flow
To Heater or
Bad Water SW
Compressor Stops
Fan Runs
1 Hour Time Delay
Activates
Time Delay Passes or
Air Temp. Increases
Safety Control Resets
Compressor
Restarts
or Below 45 to 50˚F
Air Temp or
Bad Low Press. Sw.
Heater & Green
Heating
Light Go Off