Hi
Im a newcomer. My Alaris Ivac P2000 has a error: Erf . I dont have service manual. Can everyone help me repair.
Thank.

Welcome to the forum.

The "Er" error codes all indicate what the manual calls "an internal malfunction":-

Er1 : Motor speed too fast.
Er2 : Motor speed too slow.
Er3 : Too many encoder pulses for rate set.
Er4 : Zero encoder pulses.
Er5 : RAM data invalid.
Er6 : Watchdog failure (too slow).
Er7 : Watchdog failure (too fast).
Er8 : Invalid syringe calibration data.
Er9 : Motor malfunction.

See what you get at the Self-Test routine:-

1) Switch off
2) Hold down Start button and switch On/Off switch to On
3) (display will show - - -)
4) Enter 1 2 3 using the rate buttons
5) Press Stop to commence Self-Test sequence

The pump should now proceed through the tests. Press Stop to move on the next test, or Start at any time to exit the Self-Tests routines. There should be twenty or so tests.

I am guessing that you are reading Er8 as ErF ... so pay particular attention to Test No.3 (Syringe Calibration Check). This will show a "Sy" code (Sy0 to Sy8) according to the type (manufacturer etc.) of syringe you are using (or plan to use).

Check out Test No.4 as well. This is the Default Syringe Size. "d00" should be a safe bet.

Er8 may be due to RAM not retaining data when the pump is switched off. Take a look at battery B1 on the Control PCB.

Let us know how you get on.

As in the training notes:

ErF - "Internal microcontroller RAM or external RAM error" caused by excessive RF interference or problems with IC1 or IC18 on control board.

Hope this helps.

Interesting! I wonder if the B1 battery is (still) the culprit!

I don't suppose you have all the other "ErA" (alphas) codes, and what they mean?

ErA: Voltage reference fault - IC0 on power board, or power board.

ErB: Strain gauge current fault - Bonded beam or control board.

ErC: Motor drive transistor fault (off when should be on) - Check motor wires not catching, TR1 & 2 on control board, TR4 on power board.

ErD: Motor drive transistor fault (on when should be off) - TR1 & 2 on control board, TR4 on power board.

ErE: Plunger detect error - Flex cct or plunger stuck.

Err: Pumping pressure offset error - Bonded beam or IC2 on control board.

ErY: Motor data error - Control board.

ErL: CRC error - Control board.

ErO: Microprocessor error - Control board.

ErN: Watchdog window cct error - Control board.

Finally

Eric - my brother's name!

Thanks for that (new information, for me at any rate)!

Thank you very much. Let me check IC1 and IC18 .

Vcc of IC1 and IC18 equal 5V, but V battery of IC18 does not equal 3V. Do anybody have technical service. If you have, please send me: nhoc1met84@gmail.com

We only have the manual in hard copy, unfortunately.

Meanwhile, how is the RAM back-up battery B1?