Buchi Rotavapo R-220 SE User Manual download pdf (Page 83)

8 Troubleshooting

83 R-220 SE Operation Manual, Version F

Error Addition error indicator on display Possible cause Remedy

E31 Heating bath icon ﬂashes. • Heating bath runs dry.

• Mechanical safety switch

activated.

• Switch off the unit. Let the heating

cool down.

• Reﬁll heating transfer medium at

least to minimum level.

• Reset overtemp. safety switch

according to section 8.1.

Call service if problem is persistent.

E32 Heating bath icon ﬂashes. • Heating bath runs dry.

• Temperature >200 °C.

• Switch off the unit. Let the heating

bath cool down below 180 °C.

• Reﬁll transfer medium at least to

minimum level.

Call service if problem is persistent.

E33 Heating bath icon ﬂashes. • Actual to set value difference

is higher than 15 °C.

• Electronic malfunction.

• Press “Aerate” button to conﬁrm the

error message.

• Check set value for plausibility (e.g.

set value below room temperature).

If necessary, wait for the heating

bath to cool down sufﬁciently.

Call service if problem is persistent.

E40 n.a. Voltage drop or power outage. • Press “Aerate” button to conﬁrm the

error message.

• Check mains connection for sufﬁ-

cient power performance.

• Alternatively: Install uninterruptible

power supply.

Call service if problem is persistent.

E41 n.a. • Load limit exceeded by

external electrical consumers

(30 V).

• Electronic malfunction.

• Unplug external consumers (e.g.

valves and sensors) step-by-step.

Restart system in-between for

causal research.

• Exchange defective consumer.

Call service if problem is persistent.

E42 n.a. • Load limit exceeded by

external electrical consumers

(24 V).

• Electronic malfunction.

• Unplug external consumers (e.g.

valves and sensors) step-by-step.

Restart system in-between for

causal research.

• Exchange defective consumer.

Call service if problem is persistent.

E43 n.a. Electronic malfunction. • Restart the unit.

Call service if problem is persistent.

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