Amana EE8: High stage pressure switch circuit is closed at the start of the

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

Status codeEE8Amana
What does Amana EE8 mean?

High stage pressure switch circuit is closed at the start of the heating cycle.

Call a pro: jump to when to call a pro Equipment type: furnace
How it shows: 7-segment display on a *CVC96 or *MVC96 two-stage furnace covered by IOG-2015L, including Amana AMVC96 and ACVC96: EE8. High stage does not run; low stage can still operate. The induced draft blower is running

Amana EE8 means the high-stage pressure switch is closed at the start of the cycle. High stage will not run. Low stage can. The induced draft blower is on. The chart says the contacts may be sticking or the switch wiring is shorted. EE9 is the high-stage switch that will not close. EE2 is the low-stage switch that will not close, and that one stops heat.

Likely causes

  • High stage pressure switch contacts sticking
  • Short in the pressure switch circuit wiring

Safe checks for EE8

  1. Low stage heat may still run. EE8 is not the open high-stage switch (EE9)
  2. Techniciandiagnose the high stage pressure switch and repair a short in the wiring
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 if the furnace will not go to high stage and the display shows EE8.

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Furnace pressure switch: guide

In this code: High stage pressure switch contacts sticking

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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