Dometic CCC2 error code E4
Open or out-of-range outdoor temperature sensor (heat-pump models). Heat-pump and dehumidify lock out; A/C, furnace, heat strip, and fan continue.
What to check, and in what order, is in the app. The flow Dometic CCC2 — E4 outdoor temperature sensor walks this code step by step with the pass/fail measurements, wiring schematics and procedures that go with it, and it works offline in the bay.
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- DuoTherm_CCC2_Operating_3314149.txt
Related codes
- E1Loss of communication between the CCC2 thermostat and one or more…
- E2Open or out-of-range indoor temperature sensor. Heat, cool, and…
- E3Shorted indoor temperature sensor. Heat, cool, and dehumidify lock…
- E5Open or out-of-range freeze sensor. A/C and dehumidify lock out; heat…
- E6Open-circuit humidity sensor (fitted only on select multi-zone CCC2…
- E7Loss of 120 VAC power. All 120 VAC relays switch off after a…
- E8Invalid zone configuration - the heat pump AND heat strip DIP…
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