After the Wind: Restarting Wine Storage When Island Power Returns

When the power goes, a wine cooler asks less of you than the rest of the kitchen: keep its door shut, then check four things once the lights return. On Mercer Island the city covers power outages and windstorms on the same emergency page, and Puget Sound Energy, which supplies the island’s power, is where outages are reported and tracked.

This note covers what to do while the power is off, the four things to look at when it returns, and the signs that the unit did not come back properly.

While the power is off

Keep the door shut. Every opening trades cold cabinet air for room air, and while the power is off there is nothing to put the cold back. Looking at the bottles does nothing for them.

A loaded cabinet rides out a cut better than an empty one, and the reason is simple: liquid gives up its cold far more slowly than air. We will not put a number of hours on it; that depends on the room, the season and how full the unit is.

If an outage is planned and announced, we would switch the unit off beforehand at its own control panel, so it is not sitting through the surges that come with the supply returning. Remember to switch it back on.

When the power comes back

Four things, in this order.

The panel. It should be lit and showing both set points. A dark panel when the rest of the house is back points first at the breaker; reset it once if it has tripped.

The settings. Check that each zone still shows the temperature you chose, and set it back if not.

Time. A warm cabinet needs time to pull down, and we judge nothing before it has run a full twenty-four hours. Hold off adding bottles during that day, since new ones lift a zone for hours.

A probe. Once the day is up, stand a thermometer in a glass of water in each zone, as the probe note in this series describes. The panel will not tell you, because the number there is the setting rather than a reading.

Signs it did not come back properly

Ring us if any of these is still true after that first day:

• the panel stays dark with the breaker on;
• one zone has recovered and the other has not;
• a probe reads well away from the set point, and reads the same way again on a second quiet night;
• the unit now runs without stopping, or starts and stops every few minutes;
• a word, symbol or alarm shows on the panel that was not there before.

Electronics do not always survive the moment the power comes back, so a fault that appears right after a cut deserves to be taken seriously. Tracing it is wine storage repair; the part is priced after the diagnosis, and the $89 visit is taken off once you agree to the work.

If the bottles have to come out

If a zone will not recover, the wine may be better off somewhere cool and dark than in a warm cabinet. The One Bridge note on protecting a collection while the unit is down covers where to put the bottles and what to avoid.

Before you call

1. Step 1

   Keep the door shut during the outage

   Each opening lets room air in and cold air out. Leave the bottles where they are until the power is back.

2. Step 2

   Check the panel and the breaker

   Once the house has power, confirm the panel is lit. If it is dark and the unit's breaker is tripped, push it back on one time only; a second trip means leave it off and ring us.

3. Step 3

   Confirm both settings

   Make sure each zone still shows the temperature you chose, and set it back if it does not.

4. Step 4

   Wait a full day, then probe

   Give the unit twenty-four hours with no new bottles, then read a thermometer standing in a glass of water in each zone.

Past these checks the fault is inside the machine. Call Mercer Island Sub-Zero Service on (206) 208-3377 and say which step changed nothing.

Asked about this

Should the wine unit be switched off during an outage?

For an unplanned cut there is nothing to switch; keep the door shut and wait. For one that is announced ahead of time, we would turn the unit off at its own control panel, so it is not sitting through the surges that come with the supply returning. Turn it back on once the power is steady again.

How long should the zones take to come back?

Give it a full day. We do not judge a wine unit's cooling on less than twenty-four hours of running, and a cabinet that warmed through a long outage has a lot of glass and liquid to pull down. If a zone is still well off after that, call Mercer Island Sub-Zero Service on (206) 208-3377 with the probe readings.

The panel came back but one zone stays warm. What does that mean?

Each zone is cooled by its own evaporator, so when one recovers and the other does not, the trouble usually lies with that zone's own parts rather than the power supply: its fan, its sensor or its coil. Give it the full day first. If the other zone is right and this one is not, it is a repair, not a setting.