Enigma b autoclave - Health & Beauty

Oh no, you have bought a "Runyes" Chinese unit. "Run - Yes" is the best option. Sell it & buy something better.
But, E4 is to do with Temp or Pressure not right.
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Code E4:constant temperature and constant pressure failed.

(the chamber pressure tolerance is greater than 0.25bar or temperature tolerance greater than 2.5?)

Solution:

A. please check if you can open the solenoid valve which the steam gets into.

B. please refer to E2 process
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For E2 try:

Code E2:Chamber overpressure

(The chamber pressure is above 2.4 bar for longer than 2 seconds)

Solution:

A. Please check when the pressure rises, the chamber inner temperature will also rise up. If not or rise up very slowly, then you should check the inner temperature sensor, please refer to E1-C1 process.

B. The chamber keep vacuum pressure, the vacuum pressure will be -0.7 bar within 4 minutes under normally room temperature, and it will above 0.1 bar within 5 minutes if the pressure do not leak out, otherwise, you should check the chamber cover, solenoid valve, safety valve, vacuum pump, connector welded points, till you find the problems where and why the pressure leak out, then solve the problems if you find it.

C. During the machine normally working cycle, please observe if the machine vacuum could be lower than -0.6 bar, even lower than -0.7 bar if the machine is still cold.

D. Adjust the chamber cover and tighten a little if necessary.

E. When you run a cycle for the first time with a packed or non packed instruments and it comes up with E2, please don't worry. It will not come out with the E2 alarm again when you run it the second time.