Gree GMV5 Series Service Manual page 336

Start Self-diagnosis for approx. 1 sec. after switching on or after a Restart
Run Normal processing of the user program after Start. Where a
programming unit is connected via a PCD8.K11x in PGU mode
(e.g. PG5 in PGU mode), the CPU automatically goes into the Stop
state and not the Run state; this is for safety reasons
Run Conditional Run state. A condition has been set in the debugger
(Run until...), which has not yet been met
conditional
Run with error Same as Run, but with an error message
Run cond. with Same as conditional Run, but with an error message
error
Stop The Stop state occurs in the following cases:
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Stop with error Same as Stop, but with an error message
Halt The Halt state occurs in the following cases:

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If the PLC doesn‗t go to RUN after 2 minutes, you have to send it for
System
diagnostics repair
Reset The RESET state has the following causes:
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4.3.3 PCD3.R600 Indicating LED
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL
Programming unit in PGU mode connected when the CPU was
switched on
PGU stopped by programming unit
Condition for a COND.RUN has been met
Halt instruction processed
Serious error in user program
Hardware fault
No program loaded
no communication module on an S-Bus PGU or Gateway Master
port
Supply voltage too low
Firmware not starting up
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