Troubleshooting

This page is intended as a diagnostic aid only. For detailed repair or parts replacement procedures, contact a qualified service company. Check the following table for some solutions before calling a service technician. For more product or installation information view our Frequently asked Questions page or for detailed troubleshooting download the Operations and Maintenance Manual for your specific Wine Guardian product.

Startup and Operation
  • Loose, improper or defective thermostat or humidistat. Check the thermostat and humidistat setup for the application. Compare your settings with the default setting in the Installation and Operating Instructions Manual.
  • No power to outlet. Check circuit breaker and wiring.
  • Unit not plugged in or LCDI tripped. Check to be sure unit is plugged in and/or reset the breaker.
  • Check the switch to be sure it is on and that there is power to the outlet.
  • Check the circuit breaker and wiring to be sure there is power to the unit.
  • Check the thermostat set up in the Quick Start Installation Guide or the Installation, Operation and Maintenance Manual.

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

Solution: Remove the obstruction in the duct or grille or clean the coil and filter. Restart the system after resetting the high pressure switch.

How to reset High Pressure switch:

  • Turn the power off with green power switch on side of unit.high pressure switch
  • Remove the access panel, grille or duct collar at the condenser opening labeled “Manual reset High Pressure Switch → remove panel to access”.
  • Locate the high pressure switch near the compressor (a cylindrical device piped into the refrigeration system with two wires and a red button on the top).
  • Firmly press the red button a couple of times, you may or may not feel it reset.
  • Turn the power back on. The thermostat will be flashing temperature with the ! next to it (if the cellar has warmed up past 64F).
  • Press and release the top arrow key. This acknowledges the alarm. Temperature and humidity will display on the screen. The temperature side will remain flashing (!) until the temperature drops below the high temperature alarm. If the set point is below the actual temperature, the snow flake will also flash and continue for five minutes. This indicates there is a five-minute delay before cooling will begin. When the actual temperature is lower than the high temperature alarm, it will stop flashing and the (!) will disappear.

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

Solution: Remove the obstruction in the duct or grille or clean the coil. Restart the system after resetting the high pressure switch.

How to reset High Pressure switch:

  • Turn the Wine Guardian system off at the control panel (local or remote interface).high pressure switch
  • 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).
Temperature

The exclamation mark (!) will display when the temperature of the cellar is above the high temp alarm. Once the temperature goes below 64F, the temperature will stop flashing and the exclamation mark (!) will disappear. Below are three scenarios that may cause the cool symbol (*) to not appear.

  • The system was put into heat mode.
  • The system was turned off (the display will still show the temperature and humidity when off).
  • The temperature set point is set too high.

remote interface controller display

  • Press and release the UP arrow key. On the right side of the screen the temperature set point number will start blinking.
  • Press the UP or DOWN arrow key to adjust to your desired temperature.
  • Once the screen defaults back to the temperature and humidity display, check to be sure set in auto mode. In auto mode there will be a flame symbol to the left, a gear symbol near the middle and a snowflake on the right, as shown in photo.
  • Continue to press and release the settings button until you see all three.
  • Check to be sure the thermostat is set up properly. See thermostat set up in the Installation, Operations and Maintenance manual, located on Resources and Manual page of this website.
  • Check for blockage at the condenser airflow.
  • Check to see if filter and coil need cleaning.
  • Check to see if high pressure (HP) switch is open. 

Below are illustrations of the Through-the-Wall local interface display and the Ducted/Split system remote interface display. Follow the steps below to adjust the temperature and humidity settings.

remote interface controller display

  • Press and hold settings button until screen changes to 1 F.
  • Press and release settings button until screen displays 8 0.
  • Press and release the UP arrow key until it displays 8 12.
  • Press and release settings button until you reach 15. See illustration below for further details on setting 15.

Remote interface controller display

****If the thermostat is reading 5 degrees high, use the down arrow key to change the 0 to -5. (can only be adjusted up to 5 degrees).

Remote interface controller display

  • Press and release the settings button; the screen will show 16 0. See above illustration for further details on setting 16.
  • The thermostat may be set too low on cooling and should be reset to a higher cooling temperature.
  • The thermostat may be set too low on heating temperature and should be reset to a higher heating temperature.
  • Check to see if the thermostat is mounted in a proper location.
  • There may be too much heat loss to the adjacent spaces. Increase insulation around the ductwork. Check and clean filter and coils if needed. Also if coil is frozen, shut off unit for two hours.
  • Cellar loads could be too high and may require additional insulation.
  • May need to replace with a larger sized system.
Humidity
  • If there is no moisture being added to the cellar it may be necessary to add a Wine Guardian humidifier or a room humidifier.

If the humidifier is not working:

–check wiring for loose, broken or frayed connections.

–check humidistat set up

–check for water flow and solenoid valve operation

If the humidifier is working:

–check for water being hot

–check drip pad and replace if scaled

–may need vapor barrier around the cellar

Parts & Service

Who to contact:

If you need parts or service, your first point of contact should be the distributor or website you purchased the unit from. Distributors typically know your situation best and should be able to help you the fastest.

If your distributor cannot help you, please contact us directly via phone or e-mail.  See below for contact methods.

For purchases made on this website:

Wine Guardian sells some through-the-wall systems, their associated options, and freestanding  humidifiers directly on www.wineguardian.com. If you need assistance with a purchase made directly through this website, please contact us via one of the following:
Toll Free +1 800 825 3268
Direct +1 315 452 7434
After Hours +1 315 391 8747
Email info@wineguardian.com

Wine Guardian’s parts and service department is available Monday-Friday, 8 a.m. – 5 p.m. Eastern Time. Be sure to have your model number, part number and serial number prior to calling so that we can expedite your service inquiry. You can find this on the serial plate located on your Wine Guardian unit (below).

Wine Guardian serial plate

Service Videos

Replacing main control board on Wine Guardian Through-the-Wall system