Engineering Data Guide

Product Data 55
PTAC
6RWU0-02A Control device
Remote Wall Thermostat
When the wires are connected, the unit will be controlled by a remote wall thermostat.
The thermostat connections supply the 24 Volt AC. When you install the digital/electronic thermostat, you must set it to 24
Volt AC. See the installation instruction in this manual for the Remote Wall Thermostat.
GL GH O W Y R C
Low Fan
High Fan
Reversing Valve
Heater
Compressor
24 Volt-L
24 Volt-N
(Molex Housing Spec 396-07V)
Self Diagnosis
If the unit has a malfunction, a green OPERATION LED located on the Display PCB of the unit, indicates the errors.
The error codes are displayed on the Table below :-
ON Normal
OFF No power / failure of board
Fault Codes
CH 01 Indoor Air Thermistor error
CH 02 Indoor Coil Thermistor error
CH 03 Outdoor Air Thermistor error(PIHP only)
CH 04 Outdoor Coil Thermistor error(PIHP only)
CH 05 Mode Error
CH 06 Setpoint Error
CH 07 Bad Thermistor Wiring
CH 09 Pressure Switch Error