E4 Function Error - Friedrich PTAC ZONEAIRE SELECT Service & Parts Manual

TROUBLESHOOTING

E4 Function Error

If the E4 error appears during electric heating operation, it could mean that the ir outlet has overheated.
Check the indoor outlet or inlet for any obstacles that block the air circulation.
Check the indoor motor is functioning properly.
Check air filter and evaporator are not too dirty.
Figure 704
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