Error Codes; Introduction; Lock-Out Codes; Blocking Codes - A.O. Smith BMS Interface Instuction Manual

5 Errors

5.1 Introduction

5.2 Lock-out codes

5.3 Blocking codes

Instruction manual - BMS Interface
Through the BMS Interface, internal error codes can be viewed. On parameter 20, the
actual error code for lock outs and blocking errors are displayed. When a solar system
has been connected, parameter 43 gives the actual error code of the solar system.
Parameters 10 ... 14, 15 ... 19 and 23 ... 27 show the five most recent errors of
respectively the lock outs, blocking errors and solar errors.
These internal codes are not the same as the text that is visible on the display and in the
user manual of the water heater. The table below shows the explanation of these internal
codes:
Display
Internal code
error code
0 C02
1 F04
3 C22
4 C02
5 C02
6 C02
7 F02
8 C02
9 C02
10 F09
11 C02
16 E03
17 C02
18 F07
19 F08
22 F05
23 F03
24 F03
25 F15
28 E05
255
Display
Internal code
error code
36 C02
37 C02
38 C02
39 C02
40 F11
41 E01
42 F01
Table continuous on the next page.
Ignition error (3 attempts)
Maximum temperature error
Temperature difference top tank
Flue gas temperature error
Blocking error for 20 hours
-
Maximum temperature error
Description
Internal error control
Watchdog error
Internal error control
Internal error control
Internal error control
Fan error
Internal error control
Internal error control
Internal error control
Internal error control
Flame error
Flame error
Flame error
APS not closed
APS not open
No error
Description
Internal error control
Internal error control
Internal error control
Internal error control
Flame error
Reversed phase error
41