Power Check
Voltage problems cause more strange behavior on a Mixmate than anything else — low voltage or a weak battery can trigger everything from a Tablet Error 104 warning to a full 1-Blink shutdown. This check walks through confirming the power system is healthy before chasing any other cause.
1. Charge and Evaluate the Battery
Section titled “1. Charge and Evaluate the Battery”The most immediate fix for a power issue is to get a charger on your battery. However, you must understand the difference between Voltage and Capacity:
| Voltage | Battery Status |
| 11.7V and below | Dead. The battery cannot operate the system. |
| 11.8V to 12.3V | Very Low. (25% capacity). Low voltage warnings trigger here. |
| 12.7V to 13.8V | Maintaining. Holds current charge but does not add capacity. |
| 14.0V+ | Charging. Required to add capacity back into the battery. |
Warning: If your charger never reaches above 13.8V, you are not adding capacity. A "weak" battery might show 13.5V while charging, but the moment a pump or valve draws power (load demand), the voltage will "crash." Often you'll see the tablet's low voltage warning (Error 104) first as the battery starts to sag under load, before it drops far enough to cause a full 1-Blink shutdown.
2. Check Voltage Under Load
Section titled “2. Check Voltage Under Load”A battery that reads fine at rest can still crash once something actually draws current. This is the usual cause behind "ghost" errors, sensors dropping out, or erratic behavior with no clear pattern — not a dead battery, but voltage drop under load. You might measure 12.5V at the battery, but by the time that power reaches a valve or sensor 40 feet away, it may have already dropped to 11.0V before you even turn anything on. The more items you run at once (pumps, valves, inductors), the further it drops — components furthest from the battery glitch first.
Check voltage under load: Don't just check the battery at rest. Watch the voltage readout on the Mixmate tablet while a pump is running and valves are opening. A significant dip means a power supply issue.
Inspect wire gauge: Longer runs need thicker wire to minimize resistance.
Clean connections: Corrosion at a terminal is a bottleneck for electricity. Ensure all grounds and power leads are shiny and tight.
Shorten the path: Mount the Power Module and main distribution as close to the battery source as possible.
Think of voltage like water pressure — if it's too low, the far end of the line won't work even if the source is fine.
3. Physical Connection Check
Section titled “3. Physical Connection Check”Battery Disconnect: Check the screws on the back of the disconnect switch to ensure they haven't vibrated loose.
Grounding: Inspect the ground wire connection between the Mixmate frame and the Power Module.
Power Lug: Check for corrosion or loose connections on both sides of the Power Lug on the frame.
4. Check Fuses and Breakers
Section titled “4. Check Fuses and Breakers”Pro Inductor: Check the two 15-amp fuses in the black fuse panel (top rear of unit).
Fusion Inductor: Look for tripped auto-resetting circuit breakers.
External Starter: Check the in-line fuse located inside the housing.
5. Test Voltage at the Power Module
Section titled “5. Test Voltage at the Power Module”Remove the cover of the white Power Module box and test the labeled wires on the circuit board with a multimeter:
12V IN: This should match your battery's actual voltage.
OUT (1 and 2): Should match battery voltage when the disconnect switch is in the ON position.
A good reading at the Power Module doesn't rule out power as the cause. Voltage drop gets worse with wire length — a component far from the Power Module can be starved for voltage under load even when the Power Module itself tests fine (see Step 2 above). If a specific, far-away component is intermittently dropping off the CAN bus (a common cause of communication errors like a 208), check voltage at that component itself while it's under load, not just at the Power Module.
6. Visual Power Indicators
Section titled “6. Visual Power Indicators”Verify that power is reaching the rest of the system:
Are the Stack Valve lights on?
Do the Internal Valves in the inductors light up?
Where This Applies
Section titled “Where This Applies”A power issue found here is the common root cause behind "ghost" errors and unexpected behavior in general, and specifically behind:
Tablet Error 104 — Supply Voltage is too low
Blink Code - 1 Blink — critical low voltage hard stop
Blink Code - 2 Blinks and Blink Code - 3 Blinks — communication faults
Tablet Errors 105, 204, 208, and 301 — devices dropping off the CAN bus