Hettich MIKRO 22

CP : control panel, FC : frequency converter, SB : supply board, CB : cooling board, CC : control cable, LL : lid locking, BC : braking chopper,
BR : brake resistor, MR : mains reset, EC : error cause, ES : error consequence, ER : error remedy, M : measurements, ECR : error-code reset
19/51
SER I/O - ERROR 33
EC CP is not receiving correct data from FC.
ES The centrifuge slows down until the ”open the lid” release occurs.
ER
• CC to FC is defective.
• CP or FC is defective.
ECR Perform an MR.
SER I/O - ERROR 34
EC CP is not receiving correct data from FC.
ES The centrifuge slows down until the ”open the lid” release occurs.
Further cooling until NOMINAL temperature is reached.
ER
• CC to FC is defective.
• CP or FC is defective.
ECR Perform an MR.
SER I/O - ERROR 36
EC FC sends signal NAK to the CP after receiving an unknown command.
NAK (not acknowledged).
ES The centrifuge slows down until the ”open the lid” release occurs.
Further cooling until NOMINAL temperature is reached.
ER
• CC to FC is defective.
• FC is defective.
• CP is defective.
ECR Perform an MR.
NO COOLING
EC No cooling in centrifuge chamber. Overtemperature at condenser,
temperature > 60°C.
ES Cooling switches off. Continuance of centrifugation until temperature
switch in the centrifuge chamber triggers and “ERROR 52” appears.
The centrifuge slows down until the “open the lid” release occurs.
ER
• Condenser soiled.
• Loose contact in plug.
• SB is defective.
• Fan is defective.
• Sensor cable B2 is defective.
M Also see at CB-X2.
ECR Perform an MR.