Service Manual 43

Operation

Display Function Self-diagnosis Function

Signal Receptor

Receives the signals from the remote control.(Signal receiving sound: two short beeps or one long beep.)

Operation Indication Lamps

On/Off : Lights up during the system operation.
3sec 3sec 3sec
(once)
3sec 3sec
(twice)
3sec
(5times)
Error
Code
1
2
5
Error LED
(Indoor body operation LED) Error contents
• Indoor room temperature
thermistor open/short
• Indoor pipe temperature
thermistor open/short.
• Outdoor pipe temperature
thermistor open/short.
• Poor communication.
• Indoor TH assy check
• Outdoor TH assy check
• Communication line/circuit
check
SVC check point