Steffes 9180 User Manual
Page 34
a
ppendix
A.13
T
herm
e
lecT
h
ydronic
Error Code
description
42
If the check sum fails in the Flash copy of the settings or if the initial write to the Flash fails,
Er42 is displayed. Reprogram the heating system or replace the processor control board.
43
An attempt to load a saved configuration by setting Location 98 (L098) to a value of 20, 30,
40, or 50 has failed. Any changes to location values will need to be manually set. Press and
release the “M” button to clear the error. Er43 is only applicable to processor control boards
with a revision level of G or lower only.
44
The check sum of the entire Flash is corrupt. Reprogram the heating system or replace the
processor control board.
45
An attempt was made to load memory from an unsaved location in L098. Applicable to pro-
cessor control boards with a revision level of H or higher only.
46
MA command or Pulse Width Modulation has timed out. No input has been received for 30
minutes. If the MA command or Pulse Width Modulation are not being used, verify that Lo-
cation 53 (L053) and/or Location 55 (L055) are set correctly for the application.
Cold Core
The sensed temperature of the brick core is below 40 degrees. This may be an actual condi-
tion, a defective thermocouple, reversed polarity of thermocouple wiring coupled with a core
temperature between 150°F (65°C) and 300°F (148°C), or a circuit board which is out of
calibration can cause this. Verify that the core thermocouple wiring is connected properly and
that the values in L090, L091 and L092 are correct for the application.
Core Fail
One of the core high limit switches may be open (also see error 38).
PLC Fail
The heater is configured for power line carrier; however, is not receiving a valid power line
carrier communication signal. This will display as error 25 when using BACNet and PLC fail
on the system display.
LoAd CAP
All controllable loads have been shed and Maximum Load Capacity is still exceeded. This is
not necessarily an error but merely an indication of the current condition of the application.
Example: If 4-20mA control is being used and comfort override or freeze protection brings on
elements, this error code may be displayed.
a
ppendix