25-05 NeoTherm XTR “Fan Speed Error” and “High Air Proving Press” Lockouts
25-05 NeoTherm XTR “Fan Speed Error” and “High Air Proving Press” Lockouts January 21, 2025 |
Applicable Products: NeoTherm XTR When a NeoTherm XTR unit is installed in an application with a short vent run (less than about 20 equivalent feet of pipe), the fan speed may not reach the 100% target during pre-purge. If the fan does not reach its target speed, the unit will lock out and will display “High Air Proving Press.” The wording of this error is incorrect, and Laars is in the process of changing the wording to “Fan Speed Error.” To correct the fan speed error, increase the vent system pressure drop by adding additional length and fittings to the air intake and/or exhaust until the fan can repeatably reach its target pre-purge speed, and the error no longer occurs. |
If you need further assistance, or have additional questions, please contact the Technical Support Department at 800-900-9276 |
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