Electrical Heating Operation Error - Toyotomi KURO Mini Service Manual

12. Electrical heating operation error (window type) / relay adhesion error (PTAC)
12.1 Electrical heating operation error (window type)
Main check points:
(1) electrical heating tube (2) main board
Start
Wrong wiring?
N
Main board is damaged
N
The electric heating tube
is open/short-circuited
N
Replace the unit
End
(3) wiring method
Inspect and conduct wiring again
Y
by referring to the wiring diagram
N
Replace the
Y
main board
N
Replace the electrical
Y
heating tube
N
Eliminate
Y
malfunction
Eliminate
Y
malfunction
Eliminate
Y
malfunction
61