U.S. Boiler Company ALTA ALTAC-136B, Installation, Operating And Service Instructions

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86
ALTA Combi Installation, Operating & Service Instructions
110327-07 - 2/23
19
Troubleshooting
(continued)
Table 19-6: Detailed Fault Code (found on"
cc
" and "
bb
" menus, continued)
Code Detailed
Code
Type Condition
H17
E17
H17 . 0
Hold Control in program mode.
H17 . 1
Hold Internal Safety Core error.
E17 . 2
Lockout Parameter CRC error.
E17
.
3 Lockout Parameter CRC error.
H17
.
4 Hold Boiler Type and BCC mismatch.
E17
.
5 Lockout Parameter value read from safety core differs from value read in application MCU.
H17
.
6 Hold Safety core refused write of fuel selection parameter.
H17 . 7 Hold Parameter transfer from a new BCC is required or in progress.
E17 . 8
Lockout BCC is missing, has incompatible software revision or is damaged.
H18
E18
E18 . 0 Lockout
Application parameters are not valid, normal condition following a new parameter
download.
H18 . 1 Hold Actual boiler model doesn't match with control detected model during factory reset.
H18 . 2
Hold CH Setpoint and Modulation source both selected.
H18 . 3
Warning Invalid header sensor configuration.
H18 . 4
Hold Invalid Stepped modulation parameters (Start Offset-Recycle Limit)<5°F.
H18 . 5
Warning Invalid Setpoint interpolation parameters.
H18 . 6
Hold Invalid Recirc (Comfort) Mode configuration.
E18
.
7 Lockout Selected boiler model default parameters not available.
H18
.
8 Hold
Boiler pump output parameter set to "Disabled" or boiler pump output set to "Boiler
Pump CH, Off for DHW" and Auxiliary pump outlet is not set to "DHW Boiler Piped
IWH".
E19 E19 . 0
Lockout Air/Fuel ratio outside acceptable limit.
H20
E20
H20
.
0 Warning Fuel valve or blower demand outside limit.
E20
.
1 Lockout Ionization current too low during calibration.
E20
.
2 Lockout Ionization current too high during calibration.
E20
.
3 Lockout
Ionization current lies outside the permissible range during calibration (deviation
from previous level too great).
E20
.
4 Lockout Calibration result invalid.
H21
E21
H21
.
0 Hold Ionization current lies outside the permissible range.
H21
.
1 Hold Gas Valve offset adaption at limit.
E21 . 2 Lockout Ionization current too high/low after repeated start.
E21 . 3
Lockout Gas valve current fault.
H22
E22
H22 . 0
Hold No flame build up at burner start.
E22 . 1
Lockout No flame build up at burner start.
H23
E23
E23 . 0
Lockout A flame was detected before burner start.
E23
.
1 Lockout A flame is detected for 15s, although a valve has been switched off.
H23
.
2 Hold Flame amplifier fault.
E23
.
3 Lockout Flame amplifier fault.