What is the usual setting for the limit on the fan/limit switch of a warm air furnace?
A) 180F to 200F B) 250F to 300F C) 120F to 150F D) 80F to 100F
Question 2
A strange high-pitched squeal coming from a flake ice machine with a low production of soft, mushy ice is an indication of:
A) A dirty evaporator. B) A bad auger motor bearing.
C) A bad compressor. D) A failing water recirculation pump.