Make sure the patient is safe — swap in a backup unit if you need to.
Reproduce the complaint yourself and write down exactly what you see (screen, alarm, code).
Check power, battery, cables, accessories, and settings before ordering parts.
Then open the service manual above and follow its troubleshooting section.

🛠️ Common faults for Plum 360 (7)

Distal occlusion alarms source ↗

Check the distal line for kinks/closed clamps
Resolve, then backprime or open/close cassette door
If 'pump too high above patient', lower pump nearer heart level

Cassette test failure source ↗

Clear proximal occlusion/air
Open and close cassette door, backprime
Replace administration set

Battery alarms source ↗

Plug into AC
'Service battery / replace pump' (N56/N57): send infuser for repair

Proximal occlusion at startup (N183/N184/N185) or during delivery (N188–N191) source ↗

Look for kinks and closed clamps; if all clamps are open, air in the cassette can cause backpressure: backprime
Open the cassette door completely and close it to re-run the integrity test
Secondary syringe needs free space for backprimed fluid; check the syringe size

Proximal air (N230/N231/N232) source ↗

Backprime (System Operating Manual section 4-21); check the syringe size against the set guidelines

Distal occlusion auto-restart (N192) source ↗

Have the patient move their arm; the alarm clears within 60 s before max retries
Otherwise check the distal line for kinks

Lockout (N255) source ↗

Enter the code to unlock

🔢 Plum 360 error codes (22)

Code	Meaning	Next step
E301	Audio alarm failure	Power off; replace/repair infuser source ↗
E302	Backlight voltage out of range	Power off; replace/repair infuser source ↗
E325	Battery voltage above limit	Power off and on; replace pump if it continues source ↗
N180	Distal occlusion during backprime/cassette check	Check distal line, resolve, backprime or reopen door source ↗
N186	Distal occlusion after max auto-restarts	Check line and site, restart source ↗
N187	Too much backpressure (pump too high)	Lower pump toward heart level, press START source ↗
N233/N234	Distal air-in-line exceeded threshold	Open cassette door and follow distal air-in-line procedure source ↗
N250	Door opened during delivery	Close door with cassette inserted source ↗
N251	Cassette test failure	Resolve occlusion, reopen door, backprime; replace set source ↗
N252	Depleted battery	Plug into AC now source ↗
N58	Low battery	Plug into AC source ↗
N56/N57	Battery/charging circuit needs service	Keep on AC; send for repair ASAP source ↗
N108	Door opened during Delayed Start	Close the door with the cassette inserted source ↗
N192	Distal occlusion, auto-restart in progress	Check the distal line; it clears itself if resolved within 60 s before max retries source ↗
N102	No input for 2 min after power-on	AUDIO PAUSED; continue programming source ↗
N190/N191	Proximal occlusion line A during delivery	Open clamps; if open, air backpressure: backprime source ↗
N188/N189	Proximal occlusion line B during delivery	Correct and restart line B, or clear the program or open the door source ↗
N183	Prox occlusion line B at startup	Syringe on the secondary port with free space; line unclamped; backprime or open/close the door source ↗
N184/N185	Prox occlusion line A at startup	Backprime or open/close the door fully; check syringe size source ↗
N230/N231/N232	Proximal air line A+B / B / A over threshold	Backprime; check syringe size source ↗
N107	Bolus complete on line A (Nurse Callback)	AUDIO PAUSED source ↗
N255	STOP pressed or door opened while locked	Enter the unlock code source ↗

🧰 Common checks for Infusion Pumps (5)

Occlusion source ↗

Check for closed clamps/stopcocks, kinks, IV site patency
Check pump height vs patient (LVP)

Air-in-line source ↗

Look for small bubbles; disconnect and re-prime

Door/cassette/syringe loading source ↗

Close door with set seated; check syringe clamp, flange and plunger holders

Battery/AC source ↗

Run on AC; replace/maintain battery; battery service alarms → repair

Device/system error source ↗

Power cycle once; if it repeats remove from service

📞 Still stuck? Call ICU Medical

Contact ICU Medical US

📞 Tech support: 1-800-241-4002, option 3
✉️ Email: [email protected]

Parts: [email protected]. Canada 1-866-488-6088.

Source ↗

Missing a manual, code, or fix for this model? Tell us.