Technical data

Error code
(Info
level
A0)
Possible cause
140
Invalid LPB...Segment number or unit
number
148 LPB incompatibility...-Interface / basic unit
151 LMU internal error...
152 Error in the LMU...Programming
153 Appliance was locked manually (Reset button)
154 L M U data record in AGU
160 Fan revolution threshold not reached
161 Maximum fan revolution threshold exceeded
162 Error air pressure monitor (will not close )
164 Error heating circuit- f low switch / pressure monitor
180 Chimney sweep function active
181 Control stop function active
183 Appliance is in programming mode
Error c
ode
(Info
level-
ne
A0)
Possible cause
Blink
time
Parameters 1 and 2 must be set (even if they
are correct )
0 No error
10 Error outdoor sensor
20 Error Boiler sensor 1
28 Error Flue gas sensor
40 Error Return sensor 1
50 Error Domestic water sensor 1
52 Error Domestic water sensor 2
61 Indoor unit 1 Error
62
Wrong indoor unit 1 connected or wrong radio-
controlled clock connected
77 Error Air pressure sensor
78 Error Hydraulic pressure sensor
81 Short circuit on the LPB... or no bus feed
82 Address mix-up on the LPB...
91 Data loss in EEPROM
92 Hardware error in the electronic system
100 2 Time masters
105 Maintenance request (see page 47)
110 STB actuated
111 Temperature switch actuated
113 Flue gas monitoring unit actuated
117 Hydraulic pressure too high
118 Hydraulic pressure too low
119 Hydraulic pressure switch actuated
130 Flue gas temperature limit exceeded
132
Safety shut-off ( e.g. by gas pressure switch)
133
No flame formation at the end of safety time
134 F lame cut off during operation
135 Wrong air supply
ProCon HT 150 / HT 225 6. Troubleshooting
6.1 Error messages
In the case of a permanent LMU error status. .., the error display
(16) will be on permanently. In addition to that, the diagnosis code
sent out through flashes on the m ultifunction display (12). To
clear the error status, press the release button (7) (> 2 s).
6.1.1 Error code
Table 10:
49