Honda EXT12D Maintenance Manual page 17

Water Temperature Warning Lamp
Lights when the coolant temperature has increases abnormally high,
and the engine will automatically stop.
If this occurs;
Check the coolant level, and add coolant if level is low (see page
Check the cooling air intake openings and the radiator for clogged or
overload occurred when the warning lamp lights and the engine
stops.
To restart the engine, set the engine switch to OFF once and start
according to the starting procedure.
The water temperature warning lamp may not function if the coolant
in the radiator is insufficient.
WATER TEMPERATURE WARNING LAMP
General Warning Lamp
The general warning lamp lights and engine will stop if generator
problem or overloading has occurred. Stop the engine immediately
and disconnect the appliance, and determine whether the problem is
due to an generator problem, or generator overloading.
If the warning lamp lights and engine stops;
1. Turn off the AC circuit breaker OFF.
2. Restart the engine.
3. Check the generator voltage at the voltmeter.
If the voltage is correct, check the appliance for good condition.
If the voltage is incorrect, see your authorized Honda dealer.
GENERAL WARNING LAMP
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