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York continuous amber: Flame sense current is below 1.5 microamps

Source: York manual (PDF) (opens in a new tab) ↗ · Updated

Status codecontinuous amberYork
What does York continuous amber mean?

Flame sense current is below 1.5 microamps. The manual's ignition-control levels put a normal flame sense current at about 3.7 microamps DC, the low-flame warning at 1.5 microamps, and the control lockout point at 0.1 microamps DC.

Homeowner part this code names: furnace flame sensor.

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Call a pro: jump to when to call a pro Equipment type: furnace
How it shows: LED behind the blower-door view port on a York TG9S, flashing amber continuously with no longer pause

A continuous amber flash on a York TG9S, with no long pause, means flame current is under 1.5 microamps. The same page lists normal current at about 3.7 microamps, the warning at 1.5, and lockout at 0.1. The checks are to clean the flame sensor, check gas flow, and read the current at the flame test pad. That reading is a technician measurement. It is not a counted red code.

Likely causes

  • Flame sensor that needs cleaning
  • Gas flow that is not correct

Safe checks for continuous amber

  1. Write down that the light is amber and continuous, not a counted red code
  2. Techniciancheck and clean the flame sensor, check gas flow, and verify that current at the flame current test pad is greater than 1.5 microamps
Safety firstIf you smell gas, do not touch any electrical switch or use a phone in the building; leave immediately and call your gas supplier from outside. Turn off electrical power at the furnace switch or breaker before opening any panel, and never bypass or jumper a limit, rollout or pressure switch. Gas valve, burner, venting, wiring and control-board work should be done by a licensed HVAC technician.

Capacitors can hold a charge after the power is off. Safety terms.

When to call a pro

Call a licensed HVAC technician to clean the flame sensor and measure flame current. A continuous amber light is a warning, not one of the numbered red codes.

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Parts & tools for this fix

Taken from this code's causes or steps. A search link opens Amazon results and does not confirm a fit. Check the model number in the manual.

Furnace flame sensor: guide

In this code: Flame sensor that needs cleaning

Liberon grade 0000 ultrafine steel woolSearch: York furnace flame sensorSearch: Scotch-Brite pads, fine

Nut driver set: guide

In this code: Panels and parts on a furnace are held by hex-head screws; a nut driver grips them without stripping.

See the guide for what to look for when buying one.

Multimeter for appliance and HVAC diagnosis: guide

Technician step in this code: check and clean the flame sensor, check gas flow, and verify that current at the flame current test pad is greater than 1.5 microamps

This one is for a technician to test or replace, so we only explain it and do not link to buy it.

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Related York codes

3 red flashesThe pressure switch contacts are open7 red flashesThe flame could not be established6 red flashesWhile the furnace was operating, the8 red flashesThe flame was lost five times5 red flashesThe normally closed rollout switch has9 red flashesReversed line-voltage polarity, a grounding problem,

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