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Trane · technician tips

Trane service menus, test modes and resets

7 tips for air handler, furnace, heat pump: access codes, button combinations, test modes and the resets you need at the appliance.

Jump to: Service & test modes (5) · Reset & cancel (2)

Service & test modes

Forced fan, low and high fire, test and diagnostic modes, error history and live data.

Read or clear the last 6 faults (L6F menu)

Air handler · Trane P0V0

The L6F menu shows the last six faults and clears them from inside.

  1. Press Menu until L6F appears, press Option to enter and view the faults
  2. To clear: hold Option at least 5 seconds inside the menu; release and three dashes appear three times

Applies to: P0V0 modular blower integrated control (IMBC)

Source: Trane P0V0 modular blower installer's guide 18-GE20D1-1E-EN, Fault Code Recovery, p.31. Written in our own words; check the manual for your exact model.

Run test mode (furnace)

Air handler · Trane P0V0

Lets the technician watch the blower perform its stages without starting the outdoor unit. Option holds (HLD) a step. The blower takes roughly 70 seconds to start the test.

  1. Press Menu until run appears, then press Option; the display flashes three times and the test begins
  2. Blower runs at 1st-stage compressor speed 30 s, then 2nd-stage speed 30 s; the pair repeats two more times
  3. Exit with a short press of Menu, by cycling blower power, or by making a valid call for capacity or fan

Applies to: P0V0 modular blower integrated control (IMBC)

Source: Trane P0V0 modular blower installer's guide 18-GE20D1-1E-EN, Integrated Modular Blower Control Menu, p.29-30. Written in our own words; check the manual for your exact model.

Read or clear the last 6 faults (L6F menu)

Furnace · Trane S8V2, Trane S8B1, Trane S8X1, Trane S8X2

The L6F menu replays the six most recent faults and clears them from inside.

  1. Press Menu until L6F appears
  2. Press Option to enter and step through the faults
  3. To clear: inside the menu hold Option for at least 5 seconds, release; three dashes appear three times

Applies to: S8V2, S8B1, S8X1, S8X2

Source: Trane S8V2 installation FNR-SVX003A-EN, Table 36 and Fault Code Recovery, p.59-60; Trane S8B1/S8X1/S8X2 installation 18-CE14D1-1A-EN, Display Codes and Fault Code Recovery, p.58-59. Written in our own words; check the manual for your exact model.

Run test mode (furnace)

Furnace · Trane S8V2, Trane S8B1, Trane S8X1, Trane S8X2

Lets the technician watch the inducer, igniter and blower step through stages without firing the burner or running the outdoor unit. Option holds a step (HLd). The test takes a short while to begin.

  1. Press Menu until run appears, then press Option; the display flashes three times and the test starts
  2. Steps: inducer 1st then 2nd stage (30 s each), igniter 10 s, then blower at 1st/2nd-stage compressor speed and 1st/2nd-stage gas heat speed (10 s each); the sequence repeats two more times
  3. Exit by pressing Menu briefly, cycling furnace power, or making a valid thermostat call

Applies to: S8V2, S8B1, S8X1, S8X2

Source: Trane S8V2 installation FNR-SVX003A-EN, Run Test Mode, p.57-58; Trane S8B1/S8X1/S8X2 installation 18-CE14D1-1A-EN, Display Codes, p.58. Written in our own words; check the manual for your exact model.

Force a defrost cycle with the button

Heat pump · Trane 5TWR7

Holding the forced defrost button on the control board starts a defrost; the display then shows 7 as the first digit (Defrosting). Not possible in cooling.

  1. Run the unit in heating mode with the thermostat calling
  2. Hold the forced defrost button on the control board down for over 5 seconds
  3. The display shows 7 as the first digit when forced defrost begins

Applies to: 5TWR7 multi-speed outdoor drive

Source: Trane 5TTR7/5TWR7 installation ODR-SVN002E-EN, Forced Defrost, p.34. Written in our own words; check the manual for your exact model.

Reset & cancel

Clearing lockouts, service reminders and fault history; skipping purge or de-air programs.

Reset the control to factory defaults

Air handler · Trane P0V0

Holding Menu and Option together at idle resets all menu values to factory defaults; the display flashes FD three times to confirm.

  1. Make sure the display is in idle (IdL)
  2. Hold Menu and Option together for 15 seconds, then release
  3. FD flashes three times

Applies to: P0V0 modular blower integrated control (IMBC)

Source: Trane P0V0 modular blower installer's guide 18-GE20D1-1E-EN, Fault Code Recovery, Resetting Factory Defaults, p.31. Written in our own words; check the manual for your exact model.

Reset the control to factory defaults

Furnace · Trane S8V2, Trane S8B1, Trane S8X1, Trane S8X2

Holding Menu and Option together at idle resets all menu values to factory defaults; the display flashes FD three times to confirm.

  1. Make sure the display is in idle (IdL)
  2. Hold Menu and Option together for 15 seconds, then release
  3. FD flashes three times

Applies to: S8V2, S8B1, S8X1, S8X2

Source: Trane S8V2 installation FNR-SVX003A-EN, Resetting Factory Defaults, p.60; Trane S8B1/S8X1/S8X2 installation 18-CE14D1-1A-EN, p.59. Written in our own words; check the manual for your exact model.

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For licensed technicians. Installer menus, test modes and access codes change settings that affect safety; only use them if you are trained on the appliance and understand the result. Gas, electrical and refrigerant work must be done by a qualified, licensed person, and the manufacturer’s manual for the exact model and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.