Pace Air 24HPEW-HEC Unit will not heat, though heat mode comes on, dehumidify and cool mode work, and fan works as advertised. Fault Code E4 presents at startup. Manual is off site. What is this code telling me?
Heating & Cooling - Pace - 12ACXWHEC Split System Air Conditioner
Answers & Comments
If unit displays "e4"
1? Check whether the winding resistance and
operation current of the compressor are normal.
2?Check whether the high and low pressure is normal
when the unit is running.
3?Check (whether the coil pipe sensor is normal)
whether the contact of the inserter on the circuit
board is well, the coil pipe temperature sensor is
fixed, the evaporation of the indoor unit is well,
the key is to check the evaporator temperature
detected by the coil pipe temperature sensor has
reached the cooling or heating temperature.
4?Check whether the surface of the condenser is too
dirty, it should be cleaned when it is too dirty.
5?Check whether the capacitance of the outdoor motor
and the fan is damaged, it should be replaced when
it is damaged.
6?If the above items are normal, the electric control
board should be replaced.