
No Power Diagnosis Flow
Automatic Products 432/962 Revolution
No Power Diagnosis Flow
This systematic flow guides you through checking the power path, starting from the facility outlet all the way to the machine's internal controls, to pinpoint why the unit has no power.
Qualified technician handoff: stop before live electrical testing, sealed-system refrigeration work, compressor service, or protected-compartment access unless a qualified technician is handling the work.
- Burning smell or scorch marks anywhere: Do not energize, evacuate if needed, call electrician/technician
- Water intrusion near electrical components: Do not energize, unplug if safe, hand off to technician
- Fuse blows immediately after replacement: Stop replacing fuses, indicates short circuit, hand off
- If any electrical concern is noted, or if the issue involves the main power input, do not proceed; contact a qualified technician immediately.
Checklist
Guided Diagnostic Steps
Work from low-risk checks toward technician-level inspection only when evidence supports it.
You can read or print the route now. The first checkbox click opens the service contact gate.
- 1
Verify the machine is completely unplugged and that the area is safe...
operator-intermediatelive-voltageVerify the machine is completely unplugged and that the area is safe from electrical hazards.
Qualified technician handoff: stop before live electrical testing, sealed-system refrigeration work, compressor service, or protected-compartment access unless a qualified technician is handling the work.
Stop conditions- If any electrical concern is noted, or if the issue involves the main power input, do not proceed; contact a qualified technician immediately.
- If the power source seems faulty, or if internal wiring needs inspection, a qualified technician must assess the situation.
- If the issue points to a short circuit, only a qualified technician should attempt diagnosis.
Expected: Initial condition is documented before deeper diagnosis.
Evidence to note: note
- 2
Visually inspect the power cord and connections for any signs of burn...
operator-intermediatelive-voltageVisually inspect the power cord and connections for any signs of burning, scorching, or physical damage.
Qualified technician handoff: stop before live electrical testing, sealed-system refrigeration work, compressor service, or protected-compartment access unless a qualified technician is handling the work.
Stop conditions- If any electrical concern is noted, or if the issue involves the main power input, do not proceed; contact a qualified technician immediately.
- If the power source seems faulty, or if internal wiring needs inspection, a qualified technician must assess the situation.
- If the issue points to a short circuit, only a qualified technician should attempt diagnosis.
Expected: Initial condition is documented before deeper diagnosis.
Evidence to note: note
- 3
Check the wall outlet connection.
operator-intermediatelive-voltageCheck the wall outlet connection.
Qualified technician handoff: stop before live electrical testing, sealed-system refrigeration work, compressor service, or protected-compartment access unless a qualified technician is handling the work.
Stop conditions- If any electrical concern is noted, or if the issue involves the main power input, do not proceed; contact a qualified technician immediately.
- If the power source seems faulty, or if internal wiring needs inspection, a qualified technician must assess the situation.
- If the issue points to a short circuit, only a qualified technician should attempt diagnosis.
Expected: Result is documented before continuing the route.
Evidence to note: note
- 4
Inspect the main power entry point.
operator-intermediatelive-voltageInspect the main power entry point.
Qualified technician handoff: stop before live electrical testing, sealed-system refrigeration work, compressor service, or protected-compartment access unless a qualified technician is handling the work.
Stop conditions- If any electrical concern is noted, or if the issue involves the main power input, do not proceed; contact a qualified technician immediately.
- If the power source seems faulty, or if internal wiring needs inspection, a qualified technician must assess the situation.
- If the issue points to a short circuit, only a qualified technician should attempt diagnosis.
Expected: Result is documented before continuing the route.
Evidence to note: note
- 5
Check internal connections for obvious disconnections.
operator-intermediatelive-voltageCheck internal connections for obvious disconnections.
Qualified technician handoff: stop before live electrical testing, sealed-system refrigeration work, compressor service, or protected-compartment access unless a qualified technician is handling the work.
Stop conditions- If any electrical concern is noted, or if the issue involves the main power input, do not proceed; contact a qualified technician immediately.
- If the power source seems faulty, or if internal wiring needs inspection, a qualified technician must assess the situation.
- If the issue points to a short circuit, only a qualified technician should attempt diagnosis.
Expected: Result is documented before continuing the route.
Evidence to note: note
- 6
If necessary, consult a qualified technician for deeper electrical ch...
operator-intermediatelive-voltageIf necessary, consult a qualified technician for deeper electrical checks.
Qualified technician handoff: stop before live electrical testing, sealed-system refrigeration work, compressor service, or protected-compartment access unless a qualified technician is handling the work.
Stop conditions- If any electrical concern is noted, or if the issue involves the main power input, do not proceed; contact a qualified technician immediately.
- If the power source seems faulty, or if internal wiring needs inspection, a qualified technician must assess the situation.
- If the issue points to a short circuit, only a qualified technician should attempt diagnosis.
Expected: Result is documented before continuing the route.
Evidence to note: note
Tools for this route
Location Help
Where to find this
Use this as orientation before touching the machine. It is location help, not a repair instruction.

Start outside the machine at the outlet and cord, then identify the power entry area before any protected-compartment inspection.
- Entry point for electrical power from the facility, including cord, plug, and primary protection devices.
- Power cord
- Fuse or circuit breaker
- Terminal block
Do not open energized or protected electrical areas unless a qualified technician or licensed electrician is handling the work.
cabinet glass front
terminal blockParts status
Exact public parts list not verified yet. Use this route to identify the system before ordering.
Candidate areas for part verification
Other Possible Issues
Switch routes if this symptom is not the closest match.
