Carbolite ABA 7/35B - Manual (Page 67)

67 MF60 – 1.04
Furnace Overheats (continued)
The Heat
lamp/s remain
on when the
controller is off
► The SSR has
failed ‘ON’
►
Check for an accidental wiring
fault which
could have overloaded the
SSR
A temperature
that is higher
than the
set-point is
shown during
the test
► No fault. Burning bitumen
causes the temperature to
increase above the set point.
This is normal.
Chimney Emits Smoke
Some light
smoke is
emitted
in the middle of
the test
► No fault
Dense smoke is
emitted ► The after-burner elements
or control may have failed
► Investigate or contact
Carbolite
► A fuse may have blown ►
Check the Supply fuses
Warning Lamp & Door Faults
Red Electric
Shock Risk
lamp
lights when
door is opened
► Failed cut-off relay SR1
or SR2
►
DO NOT USE until relay
replaced
► Fuse for left side of
chamber blown
► Check and replace fuse
Red Electric
Shock Risk
lamp
does not light
when tested
►
Faulty lamp
► DO NOT USE until lamp
replaced
► Faulty
relay SR3 or SR4
►
DO NOT USE until relay
replaced
► Faulty momentary switch ► DO NOT USE until switch
replaced
► Faulty door switch ► DO NOT USE until door
switch
replaced
Door does not
unlock
► Furnace may have been
turned off during a test or
there may have been a
power failure during a test
►
Enter START PROCESS then
cancel the test.
THE RELEASE CODE ‘728’ is
REQUIRED
► Failure of interface board
► Loose connection lead ►
Check all leads