ST315B User Handbook
Page
17
All error messages cause the ST315B to terminate the firing with all the
keys locked.
An alarm buzzer sounds once per second.
SWITCH KILN OFF!
To reset the ST315B turn off the power to the instrument and have the fault
investigated by your installer or kiln service engineer to rectify the fault.
Technical note: any error message will cause the auxiliary alarm relay
(if fitted) to open—see installation handbook for details.
Note: these error messages are provided to detect kiln faults and so offer
some protection to the kiln. For increased protection the use of a heat fuse
or other independent over
-
temperature trip is recommended
-
such as the
Stafford Instruments ST121.
Error 7. Maximum room temperature
exceeded. The internal temperature of the
ST315B has exceeded an installer
selectable (30
-
70°C) limit.
°C
°C/hr
hr.min
Possible causes are: room vent fan failure, ventilation grills blocked, kiln room
too small, damper or bung left open
