37
BACnet / Boilers
Boiler Modulating Sensor Select/DHW Demand Switch
Table 36. BACnet/Boiler Modulating Sensor Select/DHW Demand Switch
Value
Response
0
DHW sensor
1
Outlet sensor
2
Inlet sensor
3
Modbus
4
Auto: DHW or Inlet
5
Auto: DHW or Outlet
Lock and Hold Codes
Table 37. Lock and Hold Codes
Code
Description
Recommended Troubleshooting of Lockout Codes
Safety Data Faults
1
Unconfigured safety data
1.
New Device, complete device configuration and safety verification.
2. If fault repeats, replace module.
2
Waiting for safety data verification
1.
Device in Configuration mode and safety parameters need verification and a
device needs reset to complete verification.
2.
Configuration ended without verification, re enter configuration, verify safety
parameters and reset device to complete verification.
3. If fault repeats, replace module.
Internal Operation Errors
3
Internal fault: Hardware fault
Internal Fault.
1. Reset Module.
2. If fault repeats, replace module.
4
Internal fault: Safety Relay key feedback
error
5
Internal fault: Unstable power (DCDC)
output
6
Internal fault: Invalid processor clock
7
Internal fault: Safety relay drive error
8
Internal fault: Zero crossing not detected
9
Internal fault: Flame bias out of range
10
Internal fault: Invalid Burner control state
11
Internal fault: Invalid Burner control state flag
12
Internal fault: Safety relay drive cap short
13
Internal fault: PII shorted to ILK
14
Internal fault: HFS shorted to LCI
15
Internal fault: Safety relay test failed due to feedback ON
16
Internal fault: Safety relay test failed due to safety relay
OFF
17
Internal fault: Safety relay test failed due to safety relay
not OFF
18
Internal fault: Safety relay test failed due to feedback not
ON
19
Internal fault: Safety RAM write
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