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Premium Commercial Controls
ERV
TEMPERING CONTROL
6.4.2.6 Heat Pump 2-Stage System Monitoring
The heat pump is monitored with heating and cooling screens as well as a reversing valve
screen and if auxiliary heat is enabled, a screen showing its status.
MESSAGE
MEANING
Cool Locked Out by OA
The cooling OA lockout is lower than the OA temperature.
Heat Locked out by OA
The heating OA lockout is higher than the OA temperature.
Lockout Overlap
The OA lockouts for heating and cooling overlap. (No vent mode).
The heating takes preference.
Econ Only
If economizer is open less than 100%.
Econ Mode
If in economizer mode.
Unit OFF
Unit is off.
Aux Heat Mode
OA temp is cold enough that the auxiliary heat is used.
IN HEAT MODE
Valve is positioned for heat mode.
IN COOL MODE
Valve is positioned for cool mode.
Valve Positioning
Reversing valve is positioning. Not heat or cool is on during
this time.
The heat pump status values are shown. Multiple values may be true.