High Pressure Switch Has Shut The System Down; Instructions To Reset High Pressure Switch; Alarm Annunciation - Wine Guardian TTW018 Installation, Operation And Maintenance Manual

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
Head pressure in unit is too high because
an obstruction is restricting air flow
through the unit.

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.
✓ Locate red push button using a flash light inside the
condenser outlet section. Reaching your hand inside or
using a long screwdriver, push in the button until it locks
into position.
✓ Remove the condenser side plastic access faceplate.
✓ Push in the button until it locks into position.
✓ Place the condenser side plastic panel faceplate back on.
✓ Restart the unit at the control panel (local or remote interface).

Alarm Annunciation

50
Remove the obstruction in the duct or grille
or clean the coil. Then restart the system
after resetting the high-pressure switch.
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.
Solution