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Date: 8-4-2010
Revision: 0
Form: 2396
2.4 TROUBLESHOOTING
To support the recommended Troubleshooting, the R7910 has an Alert File. Review the Alert history for
possible trends that may have been occurring prior to the actual lockout.
Note Column:
H = Hold message
L = Lockout message
H or L = either Hold or Lockout depending on Parameter Configuration
Table 12 R7910A Lockout and Hold Codes
39
Code Description Recommended Troubleshooting of Lockout Codes Code
1 Unconfigured
safety data
1.New Device, complete device configuration and safety
verification.
2. If fault repeats, replace module.
L
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
L
3 Internal fault:
Hardware fault
H
4 Internal fault:
Safety Relay key
feedback error
H
5 Internal fault:
Unstable power
(DCDC) output
H
6 Internal fault:
Invalid processor
clock
H
7 Internal fault:
Safety relay drive
error
H
8 Internal fault: Zero
crossing not
detected
H
9 Internal fault:
Flame bias out of
range
H
10 Internal fault:
Invalid Burner
control state
L
11 Internal fault:
Invalid Burner
control state flag
L
12 Internal fault:
Safety relay drive
cap short
H
13 Internal fault: PII
shorted to ILK
H OR L
14 Internal fault: HFS
shorted to LCI
Internal fault
1. Reset module
2. If fault repeats, replace module.
H OR L