I’m back with another diesel heater to test. This one’s an interesting new offering from Sunster. I’ve been running a BougeRV brand heater under the rig to heat the area and keep the plumbing from freezing. But I jumped on this for its unique features you don’t see much: automatic start/stop to hold steady temps and save fuel, like a real thermostat, instead of just cranking it on and babysitting. Plus, it has built-in carbon monoxide protection that shuts it down if levels spike, with a live display.
It connects via Wi-Fi/Bluetooth for wireless remote control, letting you turn it on from afar or check its status. Also auto-adjusts for elevation up to 18,000 feet, runs on 12 or 24 volts, super-quiet pump under 35 dB, up to 8kW heating on just 0.16 to 0.45 liters of fuel per hour.
Unboxed: comes in a handy toolbox with manual, standard exhaust pipe and muffler, clamps, AC power supply, DC battery cables (12V 12A—no fuse, which they should include), 6.5 feet of output hose, exhaust sleeve, remote, and optional wireless thermosats, which’s also the CO monitor. Extra cord for mounting the control panel elsewhere.
Inside: 6L fuel tank, decent access for cleaning, coarse foam air filter, removable core. Fuel gauge built-in. Build quality? Plasticky hinges and unfinished edges on the fuel tank that might leak if tipped, and not fully weatherproof with holes up top for rain to sneak in. Feels cheap on hardware, fancy on electronics.
Fired it up: A minute or two startup sequence with a voice prompt, fuel pump ticks (loud at first, then fading to barely hearable), fan kicks in, hot air blasts out, 166°F at the end of the hose. Auto Thermostat test: set to 60°F, dropped to 55°F (5° swing hysteresis is adjustable), it auto-started with voice alert, warmed back up, and shut off at 65°F.
I tested the CO detector with auto shutdown, and it worked well. Stay tuned, an optional Wi-Fi switch is coming soon for testing, plus a full settings deep-dive.
Sunster TB10Pro Diesel Heater Demo Video
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Remote WiFi Control Demo
In this follow-up video, I demo the optional WiFi Switch for the Sunster TB10PRO diesel heater. With the WiFi version, you can control and adjust settings from anywhere you have access to an internet connection.
*UPDATE* Method to get the new WiFi switch to pair with the wireless remote
When network configuration is unsuccessful or data is not synchronized, when the LCD screen
displays Add, press and hold the decrease button for 3 seconds until the LCD screen displays C L r
to restore the network configuration data to factory settings and re enter network configuration
mode.
Update – Buggy Problems with both A2409 Controllers
In this video, an update on the Sunster TB10Pro diesel heater I have been testing out this winter. Unfortunately, both the regular and WiFi electrical control boxes are buggy as heck. The regular A2409 controller won’t turn on the heater and reports random error messages. The A2409Pro Wifi controller changes modes, shuts down, and turns on by itself.
Sunster Diesel Heater Teardown
In this video, I teardown the Sunster TB10Pro diesel heater to see how it is put together and to see if I can resolve an intermittent issue with the controllers.
Buggy Problem Solved!
Quick update on the Sunster diesel heater. I’ve done a few videos on it already, including a full walkthrough and teardown, but it was acting super erratic and buggy before. They sent me their new Pro WiFi controller (the one that lets you control the heater remotely via a phone app), and after installing it, the thing kept randomly changing modes on its own. I couldn’t figure it out at first. Then a commenter mentioned a similar issue with a fireplace fan, and it clicked, it was probably the little key fob remote (uses the 433 MHz frequency, same as tire pressure monitors and stuff). Turns out, when you swap to the new WiFi switch, you have to pair that remote to it. If it’s not paired, the system is constantly scanning for a signal and picks up stray wireless interference, which messes everything up. Once I paired it (had to dig around for the steps: hold two buttons to get into engineering mode, go to number 7 for “remote,” hold the fan/vent button till P1 shows for pairing, then press any button on the remote), boom—problem solved! No more random changes. The remote, the puck thing, the phone app, and the display all sync up perfectly now.
