Plymouth, MN, Heating Questions, Answered

The yellow light means the thermostat has found an issue it wants you to see. Tap the question mark at the top of the screen, and the display explains what is wrong, which helps our team when you call from anywhere in Plymouth, MN.

Yes, stronger airflow from a new Rheem furnace is expected. The new unit needs that volume of air on the heating side, which is also why it can move more air in heating mode than in cooling mode in many Medicine Lake area homes.

Winter load management is the usual reason. Your utility can hold off the heat pump for as long as 6 to 8 hours in a row, and your gas furnace keeps a Plymouth Creek or Greenwood home warm until that window ends.

What looks like smoke is steam from a defrost cycle. The unit briefly warms its outdoor coil to clear frost, and the melting moisture rises as vapor, a common sight on frosty Twin Cities West Metro mornings.

Ice on the outdoor fan blades is a likely cause in a Minnesota cold spell, so switch to emergency gas heat and let the unit thaw. Choose these settings for your equipment:

• Honeywell touchscreen: Mode, then EM Heat
• Rheem EcoNet: Mode, then E-Heat
• Thermolec plenum heater (silver or galvanized): turn its breakers off
• Electromate (tan control box with lights): set it to standby

A few simple causes are worth ruling out first. Confirm the propane tank is at 20% or above, inspect the filter, and cycle power at the light-style switch beside the furnace. Any code blinking on the thermostat or through the furnace door window helps us pinpoint the fault for your Plymouth home.

Try closing the two supply registers nearest the thermostat first. Doing so redirects warm air to the distant rooms, which often balances the house on its own across a Maple Grove or Plymouth winter.