Steffes 4140 Owner & Installers Manual User Manual
Page 38
Error Code
Description
05
Outdoor sensor (direct wired) temperature reading is out of normal range. The thermistor
circuit may be open or shorted, the processor control board may be out of calibration, or there
may be an incorrect value in L035.
06
Outdoor sensor temperature from the transmitting device (PLC system) is out of normal
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.
08-09
Currently not utilized.
10
Discharge air temperature has exceeded maximum standard operating temperatures.
11-19
Contact a qualified service technician.
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 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 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 that one of the sensors or
the core thermocouple may be shorted to ground or the processor control board may be out of
calibration.
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 on the circuit board.
31
Relay expansion board(s) are in test mode. Check the jumper configuration.
39
Indicates the value in Configuration 2 (C002) has been set to a value greater than the value in
Configuration 1 (C001). The system will not charge until the value in C002 is set lower than
C001.
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
The brick core temperature 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.
Appendix
Appendix
A.15
Comfort Plus