I.C.E. HTDM Food Process Unit - Manual (Page 35)

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board will be receiving and false temperature reading of -
58
°
F.
3. Valve Error. This will occur if the ICECON II controller
loses communication with the ball valve. To operate the
controller must receive the feed back signal form the ball
vale whenever the ICECON II controller is powered.
4. Air Proving Error. If the signal from the tachometer is lost
the board will lock out on this condition. To check for
proper operation of the tachometer perform the Tachometer
test located in the following section.
5. Flame Detect Error. If the ICECON II controller has not
detected a flame (i.e. receiver a 24Vac signal on terminal
J3-22).
6. Setup Error. This error occurs when the Combustion points
have been incorrectly configured.
Figure 5