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Trane Error Code HP1: Heat pump, stage 1 demand (Furnace)

Updated · by Aurora Star Tech Inc.

Trane error code HP1 on a furnace means: Heat pump, stage 1 demand. It is also called Trane diagnostic code HP1.

Low severityFurnaceTrane S8V2 · Trane S8X2

Homeowner? What Trane code HP1 means for you

Usually minor Your furnace is reporting: Heat pump, stage 1 demand. This code is usually informational or minor. The safe checks below often clear it; call us if it keeps showing up.

Safe things you can check yourself

  • Check the thermostat: right mode (Heat or Cool), set a few degrees past room temperature, and fresh batteries if it uses them.
  • Make sure the unit has power: its on/off switch (often looks like a light switch near the unit) is ON and the breaker in the electrical panel is not tripped.
  • Make sure the furnace front door or panel is closed properly; many furnaces will not run with the door switch open.
  • Look at the air filter. If it is grey and clogged, replace it; a blocked filter causes many shutdowns.
  • Outside, make sure the intake and exhaust pipes or vent cap are not blocked by snow, ice, leaves or a nest.
  • Check that the gas valve next to the furnace is open (handle in line with the pipe). Do not force it.
  • Try one reset: turn the power off for 30 seconds, then back on. If the code comes back, stop resetting and call a technician.

Call (647) 657-2977Book a service call

Licensed technicians serving Vaughan, Toronto and the GTA.

What does Trane error code HP1 mean?

Display for a first-stage heat pump call. It only reads this when the factory Y1-O jumper has been removed on a heat pump system; with the jumper left in, the display reads CL1.

Applies to: S8V2 and S8X2

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.

Trane models that use code HP1

S8V2A040M3PCBS8V2A040M3PDS8V2B060M4PCBS8V2B060M4PDS8V2B080M4PCBS8V2B080M4PDS8V2C080M5PCBS8V2C080M5PDS8V2C100M5PCBS8V2C100M5PDS8V2D120M5PCBS8V2D120M5PDS8X2A040M3PSABS8X2B060M3PSABS8X2B060M4PSABS8X2B080M4PSABS8X2C080M5PSABS8X2C100M5PSABS8X2D120M5PSAB

Other Trane Furnace codes

CodeMeaning
E26Return static pressure sensor out of range or not connected
E27Return air thermistor out of range or not connected
E28Supply air thermistor out of range or not connected
errActive alarm menu
FDFactory default reset done
HLdHold during run test
HP2Heat pump, stage 2 demand
HtGas heating (single-stage models)
Ht1Gas heat, stage 1 demand
Ht2Gas heat, stage 2 demand
IdLIdle - no demand
L6FLast 6 faults menu

All Trane Furnace error codes →

Trane code HP1: homeowner questions

What does Trane code HP1 mean?

Heat pump, stage 1 demand. Display for a first-stage heat pump call. It only reads this when the factory Y1-O jumper has been removed on a heat pump system; with the jumper left in, the display reads CL1.

Is it safe to keep using my furnace with code HP1?

Usually yes. Code HP1 is normally minor, but if it keeps coming back have it checked.

Can I reset Trane code HP1 myself?

You can try one reset (power off for 30 seconds, then on). If Trane code HP1 comes back, the cause is still there and a licensed technician should check it.

Who can fix Trane code HP1 near me?

Aurora Star Tech Inc. repairs Trane furnaces in Vaughan, Toronto and across the GTA. Call (647) 657-2977 or book a service call online.

Homeowner help: Furnace Not Turning On: What to Check · Furnace Blinking Light: What the Flash Codes Mean

Troubleshooting guides

Source: Trane S8V2 installation FNR-SVX003A-EN, Figure 73, p.58; Trane S8B1/S8X1/S8X2 installation 18-CE14D1-1A-EN, Sequence of Operation, p.61. Written in our own words as a summary; always check the original manual.

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.

Emergency Furnace Repair

647-657-2977