My intertherm #e2eb-01sha electric furnace mostly just blows cold air. Sometimes however the heat works just fine. Also, anytime the blower is not running the furnace is hot so we have to turn off the safety disconnect. We have tried replacing the thermostat to no avail. Help please Michael

It is possible you have a defective sequencer. This item also can control when the blower comes on and off in the heat mode. Unless you have a electric meter and know how to use it you will not be able to test the sequencer and its operation. Also I show NO Intertherm furnace with that exact model number.

Have intertherm outside central air unit will not go on. Have put a new switch,no change. Check wireing from unit to central blower, no chew or crack marks. Could it be the thermostat. Which kocks the switch I replaced on or is their a high low pressure switch. That may have gone out