Honda FourTrax Rubicon TRX520FA5 2020 Owner's Manual page 40

Indicators & Displays
When the coolant is over specified temperature, the 5th segment (6)
appears and the high coolant temperature indicator (7) lights.
If this occurs, stop the engine and check the reserve tank coolant
level. Read pages 230 – 231 and do not ride the ATV until the
problem has been corrected.
NOTICE
Continuing to ride with an overheated engine can cause serious
engine damage.
(6) (7)
(6) 5th segment (7) high coolant temperature indicator
If the "C – – – – – H" (8) blinks, the meter input signal fails. See your
dealer.
(8)
(8) "C – – – – – H"
30 Instruments & Controls