Lennox VRB Series User Manual

46
Troubleshooting
Digital Display Error Code Denition
OE0 Communication error between outdoor units
OE1 Power phase loss error
OE2 Communication error between indoor and main outdoor unit
OE4 Outdoor ambient temperature sensor (T4/T10) and condenser pipe temperature sensor (T3A/T3B) error
OE5 Voltage error
OE6 Inverter module temperature sensor error
OE7 Discharge temp sensor error
OE8 Incorrect ENC 1 Main - Sub Conguration
OXE9 Compressor driver error
OXH0 Communication error between main control chip and inverter driver chip
OH2 Quantity of outdoor unit decreased
OH3 Quantity of outdoor unit increased
OXH4 Compressor inverter module protection appears three times in 60 minutes, X stands for corresponding module
OH5 Low pressure protection lock out (P2 3X in 60 minutes)
OH6 Compressor Discharge Temperature Protection ( P4 3X in 100 minutes)
OH7 Quantity of indoor unit decreased
OH8 High pressure sensor error
OH9 DC Fan Module Protection ( P9 10X in 120 minutes)
OHb Low pressure sensor error
OYHd Sub ODU error (Y will be 1 or 2, stands for sub 1 or sub 2 ODU)
OC7 Inverter Module Temperature Protection ( 1PL / 2PL 3X in 100 minutes)
OXF1 PTC of lter board error
OF3 Outdoor unit Subcooler Outlet Temperature sensor error
OF5 Outdoor unit Subcooler Inlet Temperature sensor error
OYF6 EEV A/B/C error (Y will be 1, 2 or 3, stands for A, B, C)
OF9 Communication error between low ambient cooling kit(LAC kit) and outdoor unit PCB
OP1 High Pressure Protection, CI/CO = 4.4/3.2 Mpa or 638/464 psig
OP2 Low Pressure Protection, CI/CO = .05/.15 Mpa or 7.25/21.8 psig
OXP3 Over current protection of inverter compressor
OP4 Compressor discharge temp protection, CI/CO = 120/90°C or 248/194°F
OP5 Condenser high temp protection, CI/CO = 65/55°C or 149/131°F
OP9 Fan module protection
OXPL Temperature protection of inverter module, CI/CO = 80/60°C or 176/140°F
OPP Low compressor discharge temperature protection
OXL0 Compressor inverter module error, X stands for corresponding module (Compressor inverter module protection)
OXL1 Low voltage protection of DC bus, X stands for corresponding module(Compressor inverter module protection)
OXL2 Over voltage protection of DC bus, X stands for corresponding module(Compressor inverter module protection )
OXL4 Compressor Module Protection
OXL5 Low Drive Frequency Error
OXL7 Incorrect Phase Sequence
OXL8 Frequency Di󰀨erential Error
OXL9 Uniformed Frequency Error
OA0 Emergency Stop
OA2 Power leakage protection
NOTE - X = corresponding main compressor or sub compressor

Lennox VRB Series Specifications

General

Brand	Lennox
Model	VRB Series
Category	Heating System
Language	English