22
E SERIES INSTALLATION MANUAL
Lockout Conditions (continued)
High Pressure
This lockout mode occurs when the normally closed safety switch is opened momentarily (set at 600 PSI).
Low Pressure
This lockout mode occurs when the normally closed low pressure switch is opened for 30 continuous seconds (set at
40 PSI). A low pressure fault may also be indicated when the current sensor is activated by a failure in the compressor
startup.
Freeze Protection (Water Flow)
This lockout mode occurs when the freeze thermistor temperature is at or below the selected freeze protection point
(well 30°F or loop 15°F) for 30 continuous seconds.
Condensate Overflow
This lockout mode occurs when the condensate overflow level has been reached for 30 continuous seconds.
Fan RPM
The control board monitors fan RPM to sense operation. This lockout mode occurs if the fan RPM falls below the low
RPM limit (100 RPM) for 30 continuous seconds.
OPERATION LOGIC
HEATING COOLING
FAN ON
SL1 - IN
ON
SL2 - IN
ON
STG1 STG2 STG3 EMERG STG1 STG2
SINGLE SPEED UNITS
Compressor On On On Off On On
- - -
ECM2 Normal Med High High High Med High Low
- -
ECM2 Dehumidify Med High High High 85% Med 85% High Low
- -
Rev Valve Off Off Off Off On On
- - -
Loop Pump On On On Off On On
- On -
DHW Pump On Off Off Off On On
- - -
Aux Heater Off Off Staged Staged Off Off
- - -
Secondary 1- Out On On On Off On On
- - -
Emerg LED Off Off Off On Off Off Off
- -
T-Stat Signal Y1 Y1, Y2 Y1, Y2, W
W Y1, O Y1, Y2, O G - -
DUAL CAPACITY UNITS
Compressor-Lo On Off Off Off On Off
- - -
Compressor-Hi Off On On Off Off On
- - -
ECM2 Normal Med High High High Med High Low
- -
ECM2 Dehumidify Med High High High 85% Med 85% High Low
- -
Rev Valve Off Off Off Off On On
- - -
Loop Pump-Stg 1 On On On Off On On
- On -
Loop Pump-Stg 2 Off On On Off Off On
- - On
DHW Pump On On Off Off On On
- - -
Aux Heater Off Off Staged Staged Off Off
- - -
Secondary 1- Out On On On Off On On
- - -
Secondary 2- Out Off On On Off Off On
- - -
Emerg LED Off Off Off On Off Off
- - -
T-Stat Signal Y1 Y1, Y2 Y1, Y2, W
W Y1, O Y1, Y2, O G - -
Operation Logic Data
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