Engine System - LPG
120
Service Manual – Floortec R 870
Troubleshooting
Trouble
Possible causes
Remedy
The engine does not start
The fuel does not reach the carburettor.
Check that the tank valve is open (LPG)
The air control is in standard position.
Turn the lever to cold start position.
The oil level is low. The Oil Alert sensor is activated.
Top up with the recommended oil to the proper
level
The spark plug is damaged, dirty or the distance between
the electrodes is wrong
Correct the distance between the electrodes and
replace the spark plug
The spark plug is wetted with fuel
Dry the spark plug and reinstall it. Start the
engine with the choke lever turned to MAX
position.
The spark plug does not produce a spark.
Check or replace the spark plug.
The fuse (F3) and/or (F0) is open.
Check/replace the fuses.
The electromagnetic switch (ES2) is faulty
Replace
The LPG safety relay (KT1) is faulty
Replace
The batteries are discharged.
Recharge with a proper battery charger.
The emergency push-button has been pressed.
Check and release the emergency push-button.
The engine loses power or
stops during operation.
The filter element or elements are clogged
Clean or replace the filter elements
Poor quality power supply
Replace the tank.
The fuel filter is clogged, the carburettor is broken, the
start system is broken, the valves are locked, etc.
Replace or repair the faulty components as
necessary (take the engine to an authorized
Honda service centre)
The display shows the LOU
code.
The working conditions are disadvantageous for the
batteries.
Decrease the main broom pressure on the floor.
Avoid driving uphill for long.
Turn off the working lights.
If the problem persist, maybe it is necessary to
calibrate the engine rpm.
The display shows the HIU
code.
The battery charge is excessive.
Turn off the engine each time the machine is
stopped.
If the problem persist, maybe it is necessary to
calibrate the engine rpm.