Mini Vrf System Alarm Codes - Panasonic U-4LE1R8 Service Manual

3. Mini VRF System Alarm Codes

Alarms for outdoor units
Alarm
Code
E01 Remote Controller Reception Error
E02 Remote Controller Transmission Error
E03 Error in Indoor Unit Receiving Signal from Remote Controller (central)
E04 Error in Indoor Unit Receiving Signal from the Outdoor unit
E05 Error in Indoor Unit Transmitting Signal to the Outdoor Unit
E06 Error in the Outdoor Unit Receiving Signal from the Indoor Unit
E07 Error in Outdoor Unit Transmitting Signal to the Indoor Unit
E08 Duplicate Indoor Unit Address Settings Error
E09 More Than One Remote Controller Set to Main Error
E12 Start of Auto Address Setting Prohibited Due to Auto Address Setting Being in Progress
E13 Error in Indoor Unit Transmitting Signal to Remote Controller
E15 Auto-Address Alarm (not enough units)
E16 Auto-Address Alarm (too many units)
E18 Faulty Communication in Group Control Wiring
E20 No Indoor Units Error
E30 Outdoor Unit Serial Transmission Error
F04 Compressor Discharge Temperature Sensor Error
F07 Heat Exchanger Inlet Temperature Sensor (C1) Error
F08 Outdoor Air Temperature Sensor (TO) Error
F12 Compressor Intake Temperature Sensor (TS) Error
F16 High Pressure Sensor Error
F31 Outdoor Unit Nonvolatile Memory (EEPROM) Error
H01 Primary Current (Input) Detect of Overcurrent
H02 PAM Error
H03 Compressor CT Sensor (Current Sensor) Unplugged
H31 HIC Error
L04 Duplicated Setting of Outdoor System Address Error
L10 Outdoor Unit Capacity Not Yet Setup Error
L18 4-way valve operation failure
P03 Compressor Discharge Temperature Error
P04 Actuation of High Pressure Switch
P05 Power Supply Error
P13 Forgot-to-open Valve Alarm
P14 O Sensor
2
P16 Overcurrent of Inverter Compressor
P22 Outdoor Fan Motor Error
P29 INV Compressor Start-up Failed (including lock) Due to INV Compressor Wiring Open Phase, Faulty DCCT, etc.
Alarm Meaning
3-5
Mini VRF SYSTEM
Trouble Diagnosis
3