Today to sort out the maintenance department of the maintenance records, the results found that the issue of electric heating a total of the following four reasons.
Electric heating bad about 50% of the controller contactor burned only about 5%, the controller and the signal line contact is only 5% or so. Most of the customers in the winter for the first time will not use the controller and repair.
1, electric heating is broken, replace the new electric heating. 2, the controller of the wire contactor may be burned out, for the contactor 3, the controller signal line bad contact. 4, the customer will not operate their own, teach customers how to use the operating controller, and let them also look at the use of manual instructions.