TROUBLESHOOTING INFORMATION
WARNING:
Make sure voltage and current requirements are within the ASM150 ratings. Determine the polarity for the
application. Use appropriate wire size for voltage and current. Do NOT route/bundle AC POWER wires with any other wiring.
These instructions will assist in the correction of most problems which you may encounter with the unit. Before checking the
list, first check all wiring and connections. If problems persist after the checks, consult any Murphy facility.
SYMPTOM CORRECTIVE ACTION
When Test - Off - Auto Switch is placed in the
TEST Position, nothing happens.
Check your fuse to make sure it is good. Use a SFE 14 fuse. If good, check with a meter
to see that battery (+) is present on middle terminal of toggle switch. Also, confirm volt-
age is present at terminal 13 when switch is in TEST position.
Starter does not hold in long enough for the
engine to start.
Unit is possibly seeing a voltage drop. Ensure that battery is hooked directly to unit,
14 AWG wire is used, and no short circuits are present. Also make sure that the crank
disconnect pot (R2) is turned up high enough.
Odd, erratic behavior is noticed.
Check to ensure that all alternator and ignition wiring is routed in a separate wiring loom
from the rest of the control wiring. Also, confirm the use of shielded cable for the mag-
netic pickup. Resistor type spark plug wires and/or RF type spark plugs may be neces-
sary for spark ignition engines.
Unit will not start when remote start / stop
contact closes
Unit shuts down on oil pressure soon after
start.
Move panel mounted Test - Off - Auto switch to the “AUTO” position.
Check oil level. Turn up shutdown lockout delay pot (R4) to increase lockout time and
give engine time to develop oil pressure.
Engine cranks but never starts.
Make sure your fuel valve circuit is wired to terminal 15.
Engine starts but green light blinks on briefly
then goes out for 35 seconds. This occurs the
same number of times set for crank attempts.
Engine is then shutdown on Overcrank.
Verify the number of teeth on flywheel and engine running speed. Using the following for-
mula RPM ÷ 60 x Teeth = Hertz, determine the engine frequency in hertz. Also, determine
the date code and revision number for your ASM150 unit. This information is printed on the
side of the module. Call Murphy with this information to further trouble shoot the problem.
Output appears not to function.
Tighten connections to back of ASM150. Usually a good tight torque on the screw will
solve this problem.
You can verify operation by hooking a lamp to the suspect output. If the light does not
come on when it should, call Murphy.
ASM-92152N page 4 of 4
Warranty
A limited warranty on materials and workmanship is given with this FW Murphy product.
A copy of the warranty may be viewed or printed by going to www.fwmurphy.com/support/warranty.htm
CONTROL SYSTEMS & SERVICES DIVISION
P.O. Box 1819; Rosenberg, Texas 77471; USA
+1 281 633 4500 fax +1 281 633 4588
e-mail sales@fwmurphy.com
MURPHY DE MEXICO, S.A. DE C.V.
Blvd. Antonio Rocha Cordero 300, Fracción del Aguaje
San Luis Potosí, S.L.P.; México 78384
+52 444 8206264 fax +52 444 8206336
Villahermosa Office +52 993 3162117
e-mail ventas@murphymex.com.mx
www.murphymex.com.mx
FRANK W. MURPHY, LTD.
Church Rd.; Laverstock, Salisbury SP1 1QZ; U.K.
+44 1722 410055 fax +44 1722 410088
e-mail sales@fwmurphy.co.uk
www.fwmurphy.co.uk
MURPHY SWITCH OF CALIFORNIA
41343 12th Street West
Palmdale, California 93551-1442; USA
+1 661 272 4700 fax +1 661 947 7570
e-mail sales@murphyswitch.com
www.murphyswitch.com
In order to consistently bring you the highest quality, full featured products, we reserve the right to change our specifications and designs at any time.
MACQUARRIE CORPORATION
1620 Hume Highway
Campbellfield, Vic 3061; Australia
+61 3 9358 5555 fax +61 3 9358 5558
e-mail murphy@macquarrie.com.au
FW Murphy
P.O. Box 470248
Tulsa, Oklahoma 74147 USA
+1 918 317 4100
fax +1 918 317 4266
e-mail sales@fwmurphy.com
www.fwmurphy.com
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