SRC Service Manual
Revision 02
Aug 2007
10.2.6 Drain Error (Warning)
What it means:
Drain Operating Mode (Parameter D3) is set to Capacitive (Zero Air Loss) Mode,
and although the drain valve has been open for 30 seconds, the condensate level
sensor is still registering condensate in the chamber.
What it does:
Cuts power to the alarm contacts. Turns on Warning Light & alternates between
“drE” and the dewpoint reading on the digital display. Drain is operated in Timed
Mode according to the interval and duration settings (parameters D1 & D2).
Possible Causes & Remedies:
1) Blockage, restriction or back pressure in the condensate discharge line.
Condensate is not being evacuated efficiently and is backing up in the heat
exchanger.
Remedy – Find the cause of the blockage, restriction or back pressure and fix it.
2) Defective condensate level sensor gives a signal indicating condensate is present
even if there is none.
Remedy - Replace the defective component.
3) Defective condensate drain valve.
Remedy – Replace the defective component.
To Reset:
Drain will automatically return to Capacitive Mode when the level sensor stops
sensing liquid for at least 5 seconds, but alarm will not automatically clear.
Push Alarm Reset to clear the alarm. The alarm will also clear if the drain operating
mode (Parameter D3) is changed to Timed or Continuous (Deactivated).
Notes:
The drain alarm is possible whether the dryer is ON, OFF or in Remote Off Mode –
as long as there is power to the controller, and Parameter D3 is set to “Capacitive”
mode.
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