8. TROUBLESHOOTING
Note: When troubleshooting, always rst check for simple causes which may at rst seem too obvious. For example, an engine unable to start may be
caused by an empty propane cylinder or an unopened service valve.
SYMPTOM POSSIBLE CAUSE CORRECTIVE ACTION
Engine does not turn over.
Weak or dead battery.
Recharge or replace battery.
Battery cable is disconnected.
Connect battery cable at connector.
Ignition switch faulty.
Check switch, replace if necessary.
Faulty Starter.
Check starter, replace if necessary.
Damaged or disconnected wire in
wiring harness.
Check wiring harness to identify faulty con-
nection, replace or reconnect as required.
Numerous other causes.
See engine manual or dealer.
Engine turns over, but does
not start or run.
Propane cylinder is empty.
Rell cylinder or replace with full cylinder.
Main fuel service valve on propane
cylinder is closed.
Manually open main fuel service valve on
propane cylinder.
REGO tting (fuel hose to cylinder
connector) is not fully seated.
Manually close main fuel service valve. Dis-
connect REGO tting. Reconnect and hand
tighten to ensure secure connector is fully
seated. Slowly open main fuel service valve.
Propane cylinder OPD (overow pro-
tection device) has been triggered
Manually close main fuel service valve. Dis-
connect REGO tting. Wait 5 seconds. Re-
connect and hand tighten to ensure secure
connector is fully seated.
Slowly open main fuel service valve.
Propane regulator out of adjustment or
faulty.
Have certied dealer inspect regulator and
adjust or replace.
Poor quality propane causes deposits
of particles in regulator or valves.
Have certied dealer inspect regulator and
clean or replace. Service engine valves
according to engine manual instructions.
Contact propane supplier to provide clean
HD5 propane.
Spark plug not ring.
Replace spark plug.
Faulty oil pressure switch.
Check or replace oil pressure switch.
Numerous other causes.
See engine manual or dealer.
Propane regulator freezes
and prevents ow of
propane.
Liquid propane is entering
regulator.
• Ensure cylinder is designed for VAPOR
withdrawal.
• Ensure cylinder is designed for the correct
orientation (horizontal or vertical).
• Ensure cylinder is installed in correct ori-
entation. Make sure locator pin is inserted
into positioning slot on cylinder collar, and
follow orientation arrow indications/labels on
cylinder.
• Ensure propane cylinder is not overlled.
• Ensure use of application does not allow
operating angles to exceed equipment OEM
instructions.
Low ambient temperature.
It is normal condition for propane regulator
to operate at colder temperature than ambi-
ent, which may cause condensation or frost
formation depending on ambient
temperature and humidity levels.
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