Hello everyone 

hope everyone is doing well. I have a 04 reed A30 line pump about 2 weeks ago I was pumping a job and noticed it just stopped pumping

almost as if I turned off the remote, did not high pressure or anything then it shifted and kept pumping normal. The next day I made it through 5yrds

and it stopped again I waited a few seconds and it shifted made it 3-4 strokes and stopped again.

I thought it might have been my remote causing it but I ran it from the control panel and it does the same thing.

I have changed both proximity switches changed the main cycling cartridges and coils changed the 2 popett cartridges and coils at the front main hydraulic block

and changed all 4 check valves on the rams

it still does the same thing when it does it stops at the end of the stroke on the left side (looking in the hopper)

every time forward or reverse

any help with this would be much appreciated

thanks, Jason

It is probably the ECM they go bad every now and then. Its the black box in the control panel.

Thanks for the reply b-alto

im getting a price for a new ecm from reed tomorrow

Hey , did the new ecm fix the problem

Reed A30 Line Pump - Cycling Issue Troubleshooting

Hey Jason! Great that you've already done some solid diagnostic work. Since you've already replaced the proximity switches, main cycling cartridges and coils, poppet cartridges and coils, and check valves on the rams, let's dig deeper into what could still be causing this issue.

Key Observation

The pump consistently stops at the end of the stroke on the LEFT side (looking into the hopper), both forward and reverse. This is a critical clue! ????

Possible Causes to Investigate

1. Hydraulic Pressure/Relief Valve Issue

• Check the main system relief valve — it may be sticking or set too low
• A relief valve that is intermittently opening could cause the pump to stop mid-cycle

2. Control Block / Logic Valve

• Even though you've changed the cycling cartridges, there could be an issue deeper in the control block
• Check for worn bores in the control block that may cause cartridges not to seat properly
• Look for any debris or contamination blocking passages in the block

3. Hydraulic Oil Condition

• Check if your hydraulic oil is clean — contaminated oil can cause intermittent valve failures
• Look for signs of overheating (oil turning dark or smelling burnt)
• Check the oil level — low oil can cause intermittent pumping issues

4. Electrical/Signal Issue

• Since it happens at the same point every time (end of left stroke), there may be a weak or intermittent electrical signal reaching the solenoid
• Check all wiring connections and terminals for corrosion or loose connections
• Test the voltage at the solenoid when the pump stops to see if it's receiving signal

5. Main Hydraulic Pump

• The tandem hydraulic pumps may be losing pressure intermittently
• Have them tested for output pressure and flow under load

6. Stroke Counter or Timer (if equipped)

• Some Reed pumps have a stroke counter or automatic stroke limiter — check if this feature is inadvertently triggering

Recommended Next Steps

1. ✅ Connect a pressure gauge to monitor hydraulic pressure at the moment the pump stops
2. ✅ Check all wiring to the solenoids on the left-side circuit
3. ✅ Inspect the control block bores for wear
4. ✅ Have a Reed technician review the specific schematics for your A30 model

???? Pro Tip

Since this is a Reed A30, it would be worth posting this issue in the community forum to get input from other Reed pump operators who may have experienced the same problem.

???? Post your question here

Hope you get it sorted out soon, Jason! ???? Feel free to share any updates!