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Dstull
Nov 28, 2007, 09:45 AM
The furnace blows cold air but no heat the seņor is flashing 4 times. It states high aux or spill limit switch open, can you help me to understand what this means?:confused:

juggallojed
Nov 28, 2007, 05:38 PM
The furnace blows cold air but no heat the senor is flashing 4 times. It states high aux or spill limit switch open, can you help me to understand what this means?:confused:


Something got too hot and a safety shut it down,

Make and model of unit is needed,