Wine Guardian Through-the-Wall Wine Cellar Cooling Systems 50Hz (WG25) - Manual - Manual (Page 37)

37
High Pressure Switch has Shut the System Down
Every Wine Guardian system has a manual reset high pressure switch in the refrigeration system.
This switch shuts the compressor and condenser down if the head pressure in the system is too
high. It is intended to protect the compressor. Restricted airflow through the condenser is the
most common reason for the pressure to become too high. This can be caused by dust covering
the coil or an obstruction blocking the airflow in the duct or grille.
Possible Cause Solution
Instructions to Reset High Pressure Switch

 Turn the Wine Guardian system off at the control panel (local or remote interface). 
 
Locate the high pressure reset switch which is located within the air outlet section
at the condenser side of the system. The switch has a red push button and is
accessible by removing the plastic end cover.

 Remove the condenser side plastic access panel. 
 Push in the button until it locks into position. 
 Place the condenser side plastic panel back on. 
 Restart the unit at the control panel (local or remote interface). 
Alarm Annunciation
When an alarm condition occurs, the control will flash the backlight on the display in addition to
annunciating the actual fault on the screen. The user can make the backlight flashing stop by
pressing a button on the local user interface. However, the alarm annunciation will not actually
clear on the display until the fault is corrected.
Head pressure in unit is too high because
an obstruction is restricting air flow
through the unit. Remove the obstruction in the duct or grille
or clean the coil. Then restart the system
after resetting the high pressure switch.