Steffes 7140 - Manual (Page 44)

Error Code Description
06 Outdoor sensor temperature from the transmitting device (PLC system) is out of normal operating
range. Check the outdoor sensor attached to the transmitting device and the transmitter for proper
operation.
07 Main processor control board temperature sensor is out of normal operating range. Verify that
none of the clearances have been violated and inspect the condition of the processor control
board.
08 Currently not utilized.
09 Currently not utilized.
10 Outlet water temperature has exceeded the maximum standard operating temperature.
20 There is no communication occurring between the Base I/O board and the processor control
board. This can be caused by a defective board interface cable or an unresponsive Base I/O
board.
21 There is no communication occurring with the first relay expansion board. The board interface
cable may be defective or the first expansion board may be unresponsive.
22 There is no communication occurring with the second relay expansion board. The board interface
cable may be defective or the second expansion board may be unresponsive.
23 There is no communication occurring with the Steffes time clock module.
24 Temperature sensor offset/reference is out of range and indicates one of the sensors is shorted to
ground, the processor control board is out of calibration, or the blower/control circuit is connected
to an improper input voltage.
25 Power line carrier system is active; however, no good data has been received.
26 Insufficient main control board memory. Contact a qualified service technician.
27 Insufficient permanent memory. Contact a qualified service technician.
28 Permanent memory change has been made. Press the M button to accept. This error message
indicates a change has been made to the software program; therefore, it is important to verify that
all location settings are correct for the application.
29 On-board communication system is not fully operable. Contact a qualified service technician.
30 Base I/O control board is in test mode. Check the jumper configuration.
31 Relay expansion board(s) are in test mode. Check the jumper configuration.
39 Indicates the value in Location 13 (L013) has been set to a value greater than the value in Loca-
tion 12 (L012). The system will not charge until the value in L013 is set lower than L012.
40 Press and release the M button to clear the error. If the error code reappears, contact a qualified
service technician.
41-44 Contact a qualified service technician.
Cold Core Temperature of the brick core is below 40 degrees or the core sensing thermocouple may be
open.
Core Fail Core high limit switch may be open.
PLC Fail The system is configured for power line carrier control; however, is not receiving a valid power
line carrier communication signal.
LoAd CAP All controllable loads have been shed and Maximum Load Capacity is still exceeded.
Appendix
Appendix
n
A.17 Comfort Plus Commercial Hydronic