ICON 100 SERIES USER GUIDE 
 EN2B-0002UK07 R0404 
19
 
10.  TROUBLESHOOTING (ERROR MESSAGES) 
 
 
Error messages are given in the table below. 
 
 
MESSAGE 
(BLINKING) 
DISPLAY  CAUSE  OUTPUTS 
 
HtA 
Over temperature alarm. The case 
/ coldroom temperature exceeds 
d1+d6 and therefore always 
remains above d1+d6 for a time 
set in d7 
Active alarm output. Other 
outputs not modified 
 
LtA 
Under temperature alarm. The 
coldroom temperature is lower than 
d1-d38 and therefore always 
remains below d1-d38 for a time 
set in d7 
Active alarm output. Other 
outputs not modified 
 
PF1 
Probe 1 Fail. Short circuit or 
interruption of the thermostat probe 
input line 
Active alarm output. 
Compressor output 
according to parameter d23 
Other outputs not modified 
 
PF2 
Probe 2 Fail. Short circuit or 
interruption of the defrost 
termination probe input line 
Active alarm output. 
Defrost output according to 
parameter d8 and d9 Fan 
activation delay according 
to parameter d16. Other 
outputs not modified 
 
HLA 
Probe out of range (high end) 
Coldroom temperature greater than 
+ 200 
o
C 
(+ 392 
o
F) 
Active alarm output. Other 
outputs not modified 
 
LLA 
Probe out of range (low end)  
Coldroom temperature lower than  
- 60 
o
C   (- 76 
o
F) 
Active alarm output. Other 
outputs not modified 
 
Table 4.  Troubleshooting Messages