Service & test modes: Wall Furnace tips
Short, practical technician tips on service & test modes for wall furnace. Check each one against the manual for your exact model before acting.
Set low and high fire gas pressure with the Test Switch
Rinnai · Rinnai EX08DT, EX11DT, EX17DT, EX22DT direct vent wall furnaces
PL is the low-fire setting screen and PH the high-fire one; adjust with the up and down buttons against the manometer.
- In the gas pressure setting procedure, press the Test Switch twice while the furnace is on: PL shows.
- Compare the manometer reading with the table for the gas, altitude and vent length; adjust with the up and down buttons.
- Press the Test Switch to move to PH.
- Compare the manometer reading with the table; adjust with the up and down buttons.
- Press ON/OFF to finish; the display goes blank and the furnace returns to normal off mode.
Safety: Gas, electrical and refrigerant work must be done by a licensed technician. Turn off power and gas before servicing, never bypass a safety control, and always follow the manufacturer's manual for your exact model.
General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.