56
13 - TROUBLE SHOOTING
YES
Remo
ve all liquid
from connector
.
Check for leaks. Repair all leaks.
Replace Control Module
Replace R
eturn W
ater
Sensor
Is correct harness connected to return
sensor (2 Brown Wires)?
YES
NO
Correct wiring
Unplug molex connector on return sensor
. Is there moisture or liquid on
metal pins? Liquid might be w
ater or
antifreez
e solution.
NO
Is Primary Pump
properly oriented?
YES
NO
Disconnect harness from
Return W
ater Sensor
. Measure
resistance using digital ohm meter
. Is resistance between
950 to 33,000 ohms?
Install Primary Pump in proper
orientation
YES
NO
Replace
Control
Module
Verify
order of
pins
on
J2.
Pin
order
should
be:
empty,
black (or red),
white,
green.
Measure volts
on
pins
of
black
wire a
nd
white wire.
Is
wiring/pins in
right order?
D
oes black/wire ha
ve 120
VAC? D
oes
white wire/pin have
0
VAC?
Summary of Contents for VX-050
Page 49: ...49 13 TROUBLE SHOOTING...
Page 51: ...51 13 TROUBLE SHOOTING...
Page 63: ...63 14 1 Connection Diagram 050 075 100 MBH 14 WIRING DIAGRAM...
Page 64: ...64 14 2 Schematic Diagram of Ladder Form 050 075 100 MBH 14 WIRING DIAGRAM...
Page 65: ...65 14 3 Connection Diagram 150 200 MBH 14 WIRING DIAGRAM...
Page 66: ...66 14 4 Schematic Diagram of Ladder Form 150 200 MBH 14 WIRING DIAGRAM...
Page 83: ...83 PRIMARY LOOP EQUIVALENT LENGTH CALCULATION PUMP SELECTION 50 75 100 MBH...
Page 84: ...84 PRIMARY LOOP EQUIVALENT LENGTH CALCULATION PUMP SELECTION 50 75 100 MBH...
Page 85: ...85 PRIMARY LOOP EQUIVALENT LENGTH CALCULATION PUMP SELECTION 150 200 MBH...
Page 86: ...86 PRIMARY LOOP EQUIVALENT LENGTH CALCULATION PUMP SELECTION 150 200 MBH...
Page 87: ...87 NOTES...
Page 88: ...DUNKIRK BOILERS 2201 Dwyer Avenue Utica NY 13501 web site www ecrinternational com...
