Daikin VRV K - 2.2 Indoor Unit: PC Board Defect

Test Operation Si-95
68 Test Operation Inverter K Series
Blinking Blinking Blinking J6 Outdoor unit: Malfunction of thermistor (R2T) for heat
exchanger (loose connection, disconnection, short circuit,
failure)
On Off Blinking J6 Outdoor unit: Malfunction of thermistor (R2T) for heat
exchanger (loose connection, disconnection, short circuit,
failure)
Blinking Blinking Blinking JA Outdoor unit: Malfunction of discharge pipe pressure sensor
Blinking Blinking Blinking JC Outdoor unit: Malfunction of suction pipe pressure sensor
On Off Blinking JH Outdoor unit: Malfunction of oil temperature sensor
Blinking Blinking Blinking L0 Outdoor unit: Failure of inverter system
Blinking Blinking Blinking L4 Outdoor unit: Failure of inverter cooling
Blinking Blinking Blinking L5 Outdoor unit: Compressor motor insulation defect, short
circuit, power unit short circuit
Blinking Blinking Blinking L6 Outdoor unit: Compressor motor insulation defect, short
circuit
Blinking Blinking Blinking L8 Outdoor unit: Compressor overload, compressor motor wire
cut
Blinking Blinking Blinking L9 Outdoor unit: Compressor seizing
Blinking Blinking Blinking LA Outdoor unit: Malfunction of power unit
Blinking Blinking Blinking LC Outdoor unit: Malfunction of transmission between inverter
and outdoor control unit
Blinking Off Blinking
PO Gas depletion (heat build up)
Blinking Blinking Blinking P1 Outdoor unit: Power supply voltage imbalance, open phase
Blinking Blinking Blinking P4 Outdoor unit: Malfunction of power unit temperature sensor
On Off Blinking
U0 Refrigerant shortage, low pressure drop due to failure of
electronic expansion valve
Blinking Blinking Blinking U1 Negative phase / open phase
Blinking Blinking Blinking U2 Power supply insufficient or instantaneous failure
Blinking Blinking Blinking U4 Malfunction of transmission between indoor unit and
outdoor unit / BS unit, or outdoor unit and BS unit
Blinking Blinking Blinking U5 Malfunction of transmission between remote controller and
indoor unit
Off On Off U5 Failure of remote controller PC board or setting during
control by remote controller
Blinking Blinking Blinking U7 Malfunction of transmission between outdoor units
On Off Blinking
U7 Malfunction of transmission between outdoor units (cool/
heat unified, low noise)
Blinking Blinking Off U8 Malfunction of transmission between main remote controller
and sub remote controller (malfunction of slave remote
controller)
Blinking Blinking Blinking U9 Malfunction of transmission between indoor unit and
outdoor unit in same system Malfunction of transmission
between BS unit and indoor/outdoor unit in same system
Blinking Blinking Blinking UA Failure of combination of indoor / BS / outdoor units (model,
No. of units, etc.) Failure of combination of indoor unit and
remote controller (applicable remote controller) Failure of
BS unit connection position
On On On
UC Address duplication of central remote controller
Blinking Blinking Blinking UE Malfunction of transmission between indoor unit and central
remote controller
Blinking Blinking Blinking UF System not set
Blinking Blinking Blinking UH Failure of system
The system operates for malfunction codes indicated in black squares, however, be sure to check and repair.
Operation lamp Inspection display Unit No. Malfunction code Malfunction contents
SI-95.BOOK Page 68 Friday, March 31, 2000 10:59 AM