Furnace lockout after an excessive number of ignition retries (3 total): flame was not established, or flame was lost after it was established.
Homeowner part this code names: furnace hot surface igniter.
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Amana EE0 on the *CVC96 / *MVC96 chart in IOG-2015L is a lockout after 3 ignition retries. Flame was never established, or it was lost after it was established. The chart says to correct a gas interruption, then a technician checks the front cover pressure switch and drainage, the igniter, the flame sensor, the flue, and the induced draft blower. The manual also says the control can try again after one hour, and will return to lockout if the cause is still there. This is the two-stage family, including Amana AMVC96 and ACVC96. It is a different document from the Goodman GR9S96 single-stage guide.
Likely causes
- Gas supply interruption
- Front cover pressure switch or condensate drainage problem
- Igniter that needs replacement or realignment
- Flame sensor coated or oxidized
- Blocked flue piping, or piping with the wrong length, elbows or termination
- Induced draft blower not performing properly
Safe checks for EE0
- Confirm the gas supply to the furnace is on
- The manual says an EE0 lockout can reset after one hour, after a power interruption, or after the thermostat is lowered for 1 to 20 seconds. If the original problem is still there, the control returns to lockout
- Techniciancheck the front cover pressure switch and drainage, realign or replace the igniter, clean the flame sensor if it is coated or oxidized, check the flue, and check the induced draft blower
Capacitors can hold a charge after the power is off. Safety terms.
When to call a pro
Call a licensed HVAC technician if EE0 returns after the gas supply is confirmed. This chart is the two-stage *CVC96 / *MVC96 guide, not the single-stage GR9S96 list.
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Parts & tools for this fix
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Furnace flame sensor: guide
In this code: Flame sensor coated or oxidized
See the guide for what to look for when buying one.
Furnace hot surface igniter: guide
In this code: Igniter that needs replacement or realignment
Thermostat: guide
In this code: The manual says an EE0 lockout can reset after one hour, after a power interruption, or after the thermostat is lowered for 1 to 20 seconds. If the original problem is…
See the guide for what to look for when buying one.
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.
Furnace pressure switch: guide
In this code: Front cover pressure switch or condensate drainage problem
This one is for a technician to test or replace, so we only explain it and do not link to buy it.
Furnace inducer (draft) motor: guide
In this code: Induced draft blower not performing properly
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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