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50
Error shows when safet
y circuit is
open. R
emo
ve J13 connector from
control module. Check for continuit
y
between two pins connected to two pink wires, is continuit
y a
vailable?
YES
NO
Replace Control Module
Boiler fired without enough w
ater flow
through heat ex
changer
. Heat ex
changer
is o
ver heated. Either high limit or heat
ex
changer temper
ature switch is open.
Check the following:
•
Air in system?
•
Verify water flow in system piping
•
Flush system if water is dirty.
Is boiler supply pipe (abo
ve
heat ex
changer) hot?
W
ait for boiler to cool down.
YES
NO
Replace Brok
en S
witch
Unplug molex connector on supply temper
ature sensor
. Check continuit
y
between two pins on sensor (two pins connected to two pink wires) .
Is continuit
y a
vailable?
YES
NO
Check for loose connections on two pink wires on J13 connector
, supply sensor
, and
safet
y temper
ature switch.
YES
NO
Fix Loose Connections
Replace Wire Harness
Let all z
ones
run until w
ater
temper
ature
drops.
Is Heat Ex
changer surface hot?
YES
NO
Check high limit
and surface temper
ature
switches
13 - TROUBLE SHOOTING
Содержание VX-050
Страница 49: ...49 13 TROUBLE SHOOTING...
Страница 51: ...51 13 TROUBLE SHOOTING...
Страница 63: ...63 14 1 Connection Diagram 050 075 100 MBH 14 WIRING DIAGRAM...
Страница 64: ...64 14 2 Schematic Diagram of Ladder Form 050 075 100 MBH 14 WIRING DIAGRAM...
Страница 65: ...65 14 3 Connection Diagram 150 200 MBH 14 WIRING DIAGRAM...
Страница 66: ...66 14 4 Schematic Diagram of Ladder Form 150 200 MBH 14 WIRING DIAGRAM...
Страница 83: ...83 PRIMARY LOOP EQUIVALENT LENGTH CALCULATION PUMP SELECTION 50 75 100 MBH...
Страница 84: ...84 PRIMARY LOOP EQUIVALENT LENGTH CALCULATION PUMP SELECTION 50 75 100 MBH...
Страница 85: ...85 PRIMARY LOOP EQUIVALENT LENGTH CALCULATION PUMP SELECTION 150 200 MBH...
Страница 86: ...86 PRIMARY LOOP EQUIVALENT LENGTH CALCULATION PUMP SELECTION 150 200 MBH...
Страница 87: ...87 NOTES...
Страница 88: ...DUNKIRK BOILERS 2201 Dwyer Avenue Utica NY 13501 web site www ecrinternational com...