Westinghouse iGen5000DF Auto-Start Wiring

5000 PEAK / 3900 RUNNING WATT DUAL FUEL INVERTER • REMOTE ELECTRIC START  •  GENSTART CONTROLLER
ACIDNI LLC  |  OCTOBER 2026  |  REV 1.0
YOUR INVERTER / TRANSFER SWITCH ANY 2-WIRE "GENERATOR START" DRY CONTACT GENERATOR START OUTPUT NO COM CONTACT CLOSED = start the generator CONTACT OPEN   = stop the generator WHITE BLACK GENSTART CONTROLLER WEATHERPROOF ENCLOSURE ALL CONNECTIONS ARE LABELED SCREW TERMINALS START SIGNAL IN SIGNAL COMMON GENERATOR START/STOP START/STOP 1 START/STOP 2 12V POWER IN BATTERY + BATTERY − GENERATOR RUNNING SENSE SENSE + SENSE − SETUP (on the GenStart web page) Start Mode: BUTTON  •  Double-Press: OFF (gap 0) Start: hold 2.5 sec  •  Stop: hold 2 sec WESTINGHOUSE iGen5000DF INVERTER • GAS / PROPANE • AUTO-CHOKE • 120V ELECTRIC START/STOP BUTTON on the control panel its two wires TAP IN PARALLEL — DO NOT CUT ANYTHING GENERATOR 12V STARTING BATTERY + − install supplied 3A inline fuse on the + wire USB PORT ON THE PANEL (5V) + − supplied USB sense cable — live only while running TT-30R — 120V 30A RV OUTLET → YOUR INVERTER / CHARGER AC INPUT LEAVE THE GENERATOR SET UP LIKE THIS • Battery switch — ON (needed for the button) • Battery float charger plugged in • Fuel selector set, fuel / tank valve open • ECO mode OFF, oil level good • Choke — automatic, nothing to wire 2-wire WHAT HAPPENS, STEP BY STEP 1. Battery gets low — your inverter    closes its start contact 2. GenStart waits 3 seconds 3. Holds the start button for 2.5 sec —    the engine cranks and starts 4. Confirms it is running within 15 sec;    if not, waits 10 sec and tries again    (3 tries, then reports a fault) 5. Battery recharged — your inverter    opens the contact 6. GenStart holds the button for 2 sec    — the generator shuts down The remote key fob keeps working the whole time.

Connection Summary

GenStart TerminalConnects ToWire
START SIGNAL — SIGNALInverter / transfer switch generator-start output, NO terminalWhite, 22 AWG
START SIGNAL — COMMONInverter / transfer switch generator-start output, COM terminalBlack, 22 AWG
START/STOP 1One wire of the iGen5000DF electric start/stop button (tapped in parallel)Green, 18 AWG
START/STOP 2The other wire of the same button (tapped in parallel)Green, 18 AWG
BATTERY +iGen5000DF 12V starting battery, positive — 3A inline fuse requiredRed, 18 AWG
BATTERY −iGen5000DF 12V starting battery, negativeBlack, 18 AWG
SENSE +Red (+) lead of the supplied USB sense cable, plugged into one of the iGen5000DF's USB portsUSB cable lead
SENSE −Black (−) lead of the same cableUSB cable lead
— (no GenStart terminal)TT-30R → your inverter/charger AC input stays exactly as it is todayExisting cable

Start Signal — Three Ways

OptionHow it worksUse it when
1. Dry contact (wired)A 2-wire contact wired to START SIGNAL IN (SIGNAL and COMMON): your inverter's or transfer switch's generator-start output, or the normally-closed contact of a relay whose coil is powered by utility power. Closed = run the generator, open = stop it.The inverter or transfer switch is close enough to run two small wires to GenStart. Available now.
2. WirelessThe Wireless Dry Contact Bridge Kit: a signal-source board at the inverter reads its contact and sends it by radio to the GenStart board at the generator, which then starts and stops the generator exactly as shown on this page.The inverter is too far from the generator to run the wire. Available now (the kit replaces the controller).
3. Utility power lossA second supplied 5V USB adapter plugs into an outlet powered by the utility, not by the generator. Wire its USB cable's red (+) lead to START SIGNAL IN SIGNAL and its black (−) lead to BATTERY − (ground). Do not use COMMON for this: on GenStart, COMMON is a +5V output, not ground, and wired there GenStart cannot see the outage. In GenStart's web page, open Settings > Start signal and set Start signal type to Utility power loss (5 V adapter). When the adapter's 5V is gone for the Start delay after loss (default 10 seconds, 1–600), GenStart starts the generator. Once utility has been back for the Stop delay after return (default 300 seconds, 0–7200; 0 keeps it running until you stop it), GenStart stops it.Backup for utility power through a transfer switch, with no separate relay. Available now in firmware 3.15.8. A GenStart uses one start signal: the inverter dry contact (option 1) or utility power loss, not both.
UTILITY POWER LOSS: Anything that removes power from the utility adapter looks like an outage to GenStart: unplugging it, a tripped breaker on its circuit, or a damaged or disconnected cable will start the generator. Plug it into a dedicated utility outlet that stays on and that the generator does not feed (if the generator powers that outlet, GenStart never sees the outage end). Use the start delay after loss to ride through short blips.

Settings — GenStart Web Page

SettingValue for the iGen5000DFWhy
Start ModeButtonThe iGen5000DF starts from its electric start button; its onboard controller handles the automatic choke and cranking
Double-Press Gap0 (off)The manual starts it with one press-and-hold, not two presses
Press Length (Start)2.5 secondsThe manual says to hold the button for 2 seconds; the extra half second makes sure the hold registers
Press Length (Stop)2 secondsA hold on the same button shuts the engine down; confirm this by hand first (see below)
Start Confirm Time15 secondsThe generator's USB port must come alive within this window or the attempt counts as failed
Retries / Retry Delay3 / 10 secondsAutomatic re-try; after 3 failures GenStart stops and reports a fault
⚠ CHECK YOUR PANEL FIRST: Stand at the generator and try it by hand. Hold the electric start button for 2 seconds: the engine should start. Then, with it running, hold the same button for 2 seconds: it should shut down. GenStart can only stop the generator if that button stops it. If the first press only lights the button and a second press cranks, set Double-Press to 3 seconds and Press Length (Start) to 1 second. Then use GenStart's Test Run button and watch a full start, run and stop before you leave the system unattended.
BATTERY SWITCH MUST STAY ON: The iGen5000DF will not respond to the button, the key fob or GenStart while its battery switch is OFF. The manual has you turn it OFF after each use, which an unattended system can't do. Leave it ON and keep the included battery float charger connected so the battery stays charged between runs.
ECO MODE: The manual starts the generator with ECO mode OFF. If you turn ECO mode on for your loads, run a Test Run afterwards to make sure the start is still confirmed.
NO CO SHUTDOWN ON THIS MODEL: The iGen5000DF has no built-in carbon monoxide sensor. It must run outdoors, well away from doors, windows and vents, with CO alarms in the building. GenStart can start it with nobody present.
TAP IN PARALLEL: The two START/STOP wires splice alongside the existing start button wires (posi-taps or solder and heat-shrink). Nothing is cut, so the panel button and the remote key fob still work normally.
NO OTHER CHANGES: Choke (automatic), fuel selector and the remote-start receiver stay factory — nothing to modify.
RUNNING SENSE — NO 120V INTO GENSTART: The iGen5000DF's USB ports only have power while the generator is running, so the supplied USB sense cable plugged into one of them tells GenStart the engine actually started. Without it GenStart cannot verify a start or retry a failed one. Leave that USB port for the cable; the other one is still free. If you'd rather keep both USB ports, the supplied 12V adapter in the 120V duplex outlet does the same job. Never wire 120V to any GenStart terminal.
LOW OIL: The generator will not start while its LOW OIL light is on. GenStart will retry 3 times, then report a fault. Check the oil regularly.
PROPANE: If you run on LPG, the tank valve must be left open for unattended starting to work. On gasoline, keep the tank topped up.
SAFETY: Disconnect the generator battery before you begin wiring.
Start signal from your inverter
Start/stop button wires
12V battery power
Running sense (5V from the generator's USB port)
120V power to your inverter
Negative / common