Tefcold BLC3 - ELECTRICAL CONNECTIONS AND PROGRAMMING; Electrical Connections and TTL Serial Line; Hot Key Programming

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2. Automatically the parameter list of the “Hot Key” is downloaded into the Wing memory, the “DoL”
message is blinking. After 10 seconds the instrument will restart working with the new parameters.
3. Turn OFF the instrument remove the “Hot Key”, plug in the TTL serial cable, then turn it ON again.
At the end of the data transfer phase the instrument displays the following messages:
“end “ for right programming. The instrument starts regularly with the new programming.
“err” for failed programming. In this case turn the unit off and then on if you want to restart the download
again or remove the “Hot key” to abort the operation.
22.2 UPLOAD (FROM THE INSTRUMENT TO THE “HOT KEY”)
1. Turn OFF the instrument by means of the ON/OFF key and remove the TTL serial cable if present;
then turn it ON again.
2. When the Wing unit is ON, insert the “Hot key” and push o key; the "uPL" message appears.
3. Push “SET” key to start the UPLOAD; the “uPL” message is blinking.
4. Turn OFF the instrument remove the “Hot Key”, plug in the TTL serial cable, then turn it ON again.
At the end of the data transfer phase the instrument displays the following messages:
“end “ for right programming.
“err” for failed programming. In this case push “SET” key if you want to restart the programming again or
remove the not programmed “Hot key”.
23. ALARM SIGNALS
Mess
Cause
Outputs
“EE”
Data or memory failure Alarm output ON; Other outputs unchanged
“rPF”
Thermostat Probe failure
Alarm output ON; Compressor output according to
parameters “COn” and “COF”
“EPF”
Evaporator Probe failure
Alarm output ON; Defrost termination is timed; No
temperature control on fans.
“i1P”
“i2P”
“i3P”
Insert probe 1, 2, 3, failure
Alarm output ON; Other outputs unchanged; The cycle is
made by time
“rtC”
Real Time Clock data lost
Alarm output ON; Other outputs unchanged;
“rtF”
Real Time Clock failure
Alarm output ON; Other outputs unchanged; The date and
the duration of the cycle are not available.
“HA”
Maximum temperature alarm Alarm output ON; Other outputs unchanged
“LA”
Minimum temperature alarm Alarm output ON; Other outputs unchanged.
“FF”
Fast freezing interrupted by
shortpower failure
Alarm output ON; The freezing cycle restart from the same
point at which was interrupted.
“PFA”
Fast freezing interrupted by
long power failure
Alarm output ON; The freezing cycle restart from the
current phase.
“OCF”
Max duration of the cycle is
expired
Alarm output ON; Other outputs unchanged. In any case
the cycle ends when the final temperature is reached
“EA”
External alarm
Alarm output ON; Other outputs unchanged.
“CA”
Serious external alarm
Alarm output ON; Other outputs OFF.
“dA”
Door open alarm
Alarm output ON; Other outputs unchanged.