i have a ruud ultra series central air unit and landlord does not have the owners manual. landlord thinks the cenral air unit should run on heat em saver setting but does not. we think the furnace is running off straight electricity since the central unit is not kicking on. when i turned the ac unit on as running in ac mode, the ac untit runs fine, but when i turn it back to heat, no matter what setting i put it on, the ac unit does come on. is this how it is supposed to be?
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