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Troubleshooting Instructions

Before going through the check list below, refer to the connections and
operation procedures. Also check your system wiring schematic.

If any problems persist after you have made these checks, consult your
nearest Murphy facility.

1. Symptom:  No display

a. Check that the miniature D-sub 9-pin connector (power and control

cable) is firmly connected to the back of the S1400 module. Check 
the power and control cable for cracks or broken wire.

b. Check for power failure or power input shutdown.

NOTE: If after all of the above has been done, and there is still no dis-

play, return the S1400 module to us.

2. Symptom: Engine fails to start (Sensor switch fault display cannot

be cleared.)

a. Check that the miniature D-sub 9-pin connector (power and control 

cable) is properly connected to the back of the S1400 module.

b. Check that the sensor input cable connector (ribbon cable) is 

properly connected to the back of the S1400 module.

c. Check the display window for low battery voltage. A fading dis-

play will indicate loss of primary and backup power. To fully 
charge the battery pack allow 24 hours with primary power ON.  

NOTE: Backup battery package can only be replaced at the factory.

d. Check to see that LED lights are lit indicating relays are 

functioning

e. Check that the 8 leads on the 8-point terminal block under the 

Safety Barrier cover are connected and tight. (See drawing.)  

f. Measure the voltage between terminals #1 and #2 on the 8-point 

terminal block, (voltage should read between 5 VDC and 6 VDC). 
Do this with the power input connected to power supply, and with 
it disconnected.  There should not be more than a 0.5 V difference 
between the readings with the panel connected, and not connected.

NOTE: If  shutdowns still result, send the complete system back to us.

TROUBLESHOOTING INSTRUCTIONS

WARNING:  Do NOT open power supply until operations have been shut down and area has been rendered non-hazardous.  
Do NOT run sensor wires in conduit with any other wire. Do NOT apply voltage to any annunciator input terminals. Do NOT  bun-
dle sensor wires with any other wiring. Make sure the voltage and current requirements are within the S1400 system ratings.

S1400 POWER SUPPLY

Customer

wiring

SAFETY BARRIER

Screw for 
equipment 
grounding

L2= K1
L3= K2
L4= K3
L5= K4

L1

Power &
Control
Cable

8-point 
Terminal 
Block

LED lights–Relay indicators

LED light–for 
Power “on/off”
indication

S1400 Module

(back view)

Power and Control Cable

D-sub Miniature Connector

Sensor Input Cable

Connector

WARRANTY

A two year limited warranty on materials and workmanship is provided with this Murphy product. Details are

available on request and are packed with each unit.

6

Printed in U.S.A.

®

FRANK W.

MFR.

■ 

Frank W. Murphy Manufacturer

P.O. Box 470248; Tulsa, Oklahoma 74147; USA

tel.

(918) 627-3550  

fax

(918) 664-6146 

e-mail

fwmurphy@ionet.net 

■ 

Frank W. Murphy Southern Division

P.O. Box 1819; Rosenberg, Texas 77471; USA

tel. 

(281) 342-0297  

fax

(281) 341-6006 

e-mail

murphysd@intertex.net

Since 1939

■ 

Frank W. Murphy, Ltd.

Church Rd.; Laverstock, Salisbury SP1 1QZ; U.K.

tel.

+44 1722 410055  

fax 

+44 1722 410088  

tlx

477088

e-mail 

sales@fwmurphy.co.uk

■ 

Frank W. Murphy Pte., Ltd.

26 Siglap Drive; Republic of Singapore 456153

tel.

+65 241-3166

fax

+65 241-8382 

e-mail

fwmsales@fwmurphy.com.sg

■ 

Murphek Pty., Ltd.

1620 Hume Highway; Campbellfield, Vic 3061; Australia

tel.

+61 3 9358-5555  

fax

+61 3 9358-5558

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.

■ 

Murphy de México, S.A. de C.V.

Blvd. Antonio Rocha Cordero 300, Fracción del Aguaje 
San Luis Potosí, S.L.P.; México 78384 

tel.

+52-48-206264  

fax

+52-48-206336

e-mail

murmexsl@sanluis.podernet.com.mx

■ 

Murphy Switch of California

P.O. Box 900788; Palmdale, California 93590; USA

tel.

(805) 272-4700  

fax 

(805) 947-7570

e-mail

sales@murphyswitch.com

■ 

Frank W. Murphy France

tel.

+33 1 30 762626  

fax

+33 1 30 763989

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