GRUNDFOS INSTRUCTIONS
14
7.2 Start-Up Sequence.
Upon powering up the unit, the controller will display the PHT * and Grundfos for 3 seconds
followed by the software version for a further 3 seconds.
7.3 Main Operating Screen.
When the unit is operating normally and the status is healthy the display will include:
Status: OK / System 1 Pressure and Value / Current Date and Current Time:
System 1 Pressure 1.5 Bar
With the PHT A-T configuration, the display will also show System 2 Pressure and value:
System 1 Pressure 1.5 Bar
System 2 Pressure 2.0 Bar
If a fault condition is active, then the Status will show FAULT and the line below will carry a
message indicating the fault. If more than one fault exists then the first detected fault is shown
until cleared, the next fault is then displayed.
System 1 Pressure 1.5 Bar
To interrogate all existing fault
conditions press the DOWN key and
scroll through the active faults.
See section 7.7 for more details.
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