IC Knowledge Base

Riello UPS Error Codes

Riello UPS Systems 

Display information and fault information how to set bypass mode

 

User Messages

Display 

Meaning  

U01 Low battery warning
U02 Programmed switch-off enabled
U03 Programmed switch-off imminent
U04 Bypass disabled
U05 Synchronisation disabled (UPS in free running mode)
U06 Waiting for battery charging
U07 Service UPS
U08 Service batteries

Alerts

Display 

Meaning  

A06 Sensor1 temperature under 0°C
A08 Sensor2 temperature under 0°C
A54 Load percentage greater than the user threshold set
A61 Replace battery
A62 Batteries missing or Battery Box missing / not connected   
A63 Waiting for battery to charge

Faults

It is worth sorting these as they usually don't improve when left

Display 

Meaning 

F01 Internal communication error
F02 Phase 1 input fuse blown
F03 incorrect auxiliary power supply
F04 Heatsink over temperature
F05 Temperature sensor 1 fault
F07 Temperature sensor 2 fault
F09 Precharge of positive branch condensors failed
F10 Precharge of negative branch condensors failed
F11 input relay fault
F13 Capacitor pre-charge failed
F21 Capacitor bank overvoltage
F23 Output overload
F33 Battery measures error
F38 Battery charger fault
F40 Inverter overvoltage
F41 Continuous output voltage
F42 Incorrect inverter voltage
F43 Inverter under voltage
F50 Overload: load > 103%
F51 Overload: load > 110%
F52 Overload: load > 150%
F53 Short Circuit
F55 Waiting for load reduction to return to inverter
F60 Battery Over Voltage

 

 

 

Command Settings

NOTE C02 is very useful and bypass can be selected depending on the model

Older models have a rocker switch under the battery cover labelled I/II  this is the bypass control switch 

Newer models need a button mash to get there   hold   'ON' and 'SEL' for 4 seconds 

Display 

Meaning 

C01 Remote control 1 (Switch On/Off)    
C02 Remote control 2 (Bypass Mode)
C03 Remote control 3 (Switch On/Off)
C04 Battery test in progress  

 

 

Lockouts

At this point the UPS has stopped being a UPS but may still provide power on bypass

Control card is not inserted correctly

Display 

Meaning

L02

Control card is not inserted correctly

L03

incorrect auxiliary power supply

L04

Heatsink over temperature

L05

Temperature sensor 1 fault

L07 

Temperature sensor 2 fault

L10

Input fuse broken or input relay stuck (does not close)

L11

Input relay fault

L13

Capacitor pre-charge failed

L20

Capacitor bank undervoltage   

L21

Capacitor bank overvoltage

L40

Inverter overvoltage

L41

Continuous output voltage

L42

Incorrect inverter voltage

L43

Inverter under voltage

L50

Overload - load > 103%

L51

Overload - load > 110%

L52

Overload - load > 150%

L53

Short circuit

 

 

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