Symptom index

Start with what the customer SEES. Then open the topic. Every brand topic starts with the checks that fix most calls.

No hot water / lukewarm / hot then cold

Tankless: open TANKLESS: START FIRST, then the brand topic (GIRARD, FURRION, TRUMA, OTHER). Tank heater (Suburban, Atwood): see LP & HEAT.

Fridge not cooling / code on the fridge

FRIDGE: BASICS first (level, vents, power, test). Then FRIDGE: NORCOLD or FRIDGE: DOMETIC for codes. 12V compressor fridge: FRIDGE: COMPRESSOR.

Slide will not move / one side stuck

In-wall slide with a controller and blink codes: SLIDES: SCHWINTEK. Other types and general checks: SLIDES / JACKS.

Jacks will not level / error on touch pad

LEVELING: GROUND CONTROL for Lippert Ground Control 3.0 error messages.

Generator will not start / shuts off / blink code

GENERATOR: ONAN.

AC not cooling / breaker trips

AC / HEAT, 120V AC. Use AC TEST on the home screen to measure delta-T.

Battery dead / lights dim / things act weird

12V DC (voltage drop, parasitic draw, charger). Low 12V is behind a huge share of appliance codes: furnace, tankless, slides, fridge boards.

Furnace will not light / smell of gas

LP & HEAT. If you smell LP, stop and use SAFETY first.

Rule of thumb: when two different appliances act up at once, suspect 12V or LP supply before blaming either appliance.