Mitsubishi Electric PQHY/PQRY error codes
Codes
- 6841Error codeA control communication synchronism not recover: Indoor/heat source unit communication error (Transmitting error) (Heat source unit) Abnormal if "0" receiving is detected 30 times continuously though heat source controller circuit board has transmitted "1". Abnormal if heat source controller circuit board could not find blank of transmission path for 3 minutes.
- 6842Error codeA control communication transmission/reception hardware trouble: Indoor/heat source unit communication error (Transmitting error) Abnormal if "1" receiving is detected 30 times continuously though indoor controller board has transmitted "0".
- 6843Error codeA control communication start bit detection error: Indoor/heat source unit communication error (Signal receiving error) Abnormal if indoor controller board could not receive any signal normally for 6 minutes after turning the power on. Abnormal if indoor controller board could not receive any signal normally for 3 minutes. Consider the unit as abnormal under the following condition. When 2 or more indoor units are connected to a heat source unit, indoor controller board could not receive a signal for 3 minutes from heat source controller circ
- 6846Error codeStart-up time over: Start-up time over The unit cannot finish start-up process within 4 minutes after power on.
- 7105Error codeAddress setting error: Erroneous setting of OC unit address Erroneous setting of BC controller address
- 7107Error codePort setting error: The port with wrong number is connected to the indoor unit.The model total connected to the port is greater than the specification.
- 7130Error codeIncompatible unit combination: The check code will appear when the indoor units with different refrigerant systems are connected. 3. An indoor unit and the BC controller. compatible indoor unit or BC controller is conCheck whether the connecting adapter for nected. M-NET is not connected to the indo