Rheem RP1748HJVXA - Page 75

Discharge temperature sensor error
RP1724HJVXA
RP1730HJVXA
OK
OK
DC
CN63
THERMISTOR (DIS.TEMP.)
BROWN BROWN
1 32
1 32
RP1736HJVXA
RP1748HJVXA
CN63
THERMISTOR (COMP SHELL) THERMISTOR (DIS.TEMP.)
BLACK BLACK BLACK BLACK
1 2 3 4
1 2 3 4
Discharge temperature thermistor short detected
Discharge thermistor open detected
1. Connector connection failure, open
2. Thermistor failure
3. Main PCB failure
Check Point 1 : Check connector connection and cable open
Connector connection state check
Cable open check
Check Point 2 : Check thermistor
Thermistor characteristics check (Disconnect thermistor from PCB and check.)
Check Point 3 : Check voltage of main PCB (DC 5.0V)
Main PCB (CN63:1-3) voltage value = 5V (RP1724/1730HJVXA)
Main PCB (CN63:1-2) voltage value = 5V (RP1736/1748HJVXA)
Disconnect thermistor from main PCB, and check voltage.
If the voltage does not appear, replace main PCB,
and execute the check operation again.
03-25
Troubleshooting 18
Detective details:
Discharge temperature thermistor
Detective actuators:
Forecast of cause :
Indicate or Display:
Indoor unit
Operation lamp: 7 times Flash,
Timer lamp : 1 time Flash
Wired remote control
Error code : [E : 71]
n
: n times blinking
: Light ON: Light OFF
Mode Error
2 7
1
Outdoor unit (RP1736/1748HJVXA)
(PARTS INFORMATION 7)
A B FEDC