Maintenance
STYLEREF Chapter \* MERGE
10.2 Real Time Clock (RTC) Battery Replacement
A CR2032 Lithium-Manganese battery to power the inverter‘s built-in RTC (real time clock)
is installed on the main PCB. When the battery charge is low, a low battery voltage level
warning is given on the keypad display.
The RTC feature and any other features related to the RTC feature, such as the time event
control, do not work properly when the battery runs out. Refer to the following battery
specifications when a battery replacement is required.
RTC Battery Specifications
Model type: CR 2032 (lithium-manganese)
Nominal voltage: 3 V
Nominal capacity: 220 mAh
Operating temperature range: -20–80 degrees C
Life span (approximately): 53,300 hrs (inverter on) / 25,800 hrs (inverter off)
Follow the instructions below to replace the RTC battery.
ESD (Electrostatic discharge) from the human body may damage sensitive electronic
components on the PCB. Therefore, be extremely careful not to touch the PCB or the
components on the PCB with bare hands while you work on the main PCB.
To prevent damage to the PCB from ESD, touch a metal object with your hands to discharge
any electricity before working on the PCB, or wear an anti-static wrist strap and ground it on a
metal object.
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