Introduction If a low-intensity radiant tube heater lights and then drops out, or locks out on flame sense, the flame rod is one of the first components worth investigating. A dirty flame rod, a loose connection, damaged wiring, or insufficient gas pressure can all prevent the control from confirming a proper flame. Before replacing parts, […]
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Introduction – What is a ‘V3’ Burner? Detroit Radiant Products newest burner box design is referred to as the V3 Burner. This includes a service access door which can be opened while the unit is running for easier serviceability. This blog and video go over how to test a Gas Valve on these units. If […]
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Introduction A forced air unit heater that shuts down unexpectedly may be reacting to a high limit or flame rollout switch issue. One of the clearest signs is the fan sequence: when there is a call for heat, the inducer fan and the room circulating fan start at the same time. Under normal operation, the […]
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Introduction A radiant heater that will not ignite can sometimes come down to one small part: the hot surface igniter, commonly called a glow bar. Fortunately, diagnosing it is straightforward. All you need is a multimeter set to resistance, or ohms. An OL reading is often the first big clue. It usually means the igniter […]
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Introduction If an electric heater is not producing heat, start with two straightforward checks: confirm that the heater has a call for heat, then verify that the heating element has continuity. These tests narrow the issue down quickly and help determine whether the problem is incoming power or a failed element. The Two Checks […]
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Introduction Regular maintenance is one of the simplest ways to protect a DR Series radiant tube heater, maintain efficient operation, and avoid unnecessary repairs. Cleaning is straightforward, but the method matters. Too much compressed-air pressure or standing too close to the unit can damage critical gasket material around the ray head. The correct approach is […]
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Introduction If you need to figure out whether a DR Series radiant tube heater has a bad gas valve, the process is straightforward when you use the right tools and check both power and gas flow. The key is not guessing. You want to confirm whether the valve is actually being energized and whether gas […]
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Introduction If a radiant tube heater is not starting, the first thing to confirm is simple: is the heater actually getting a call for heat? That check matters because it tells you where to focus your troubleshooting. If the call for heat is present, the issue is likely inside the heater. If it is not, […]
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Introduction Before starting up a radiant tube heater, one of the most important checks is gas pressure. If the inlet pressure or manifold pressure is off, the heater may not operate the way it should. That can lead to poor performance, ignition problems, and unnecessary troubleshooting later. This walkthrough covers how to check inlet gas […]
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