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Troubleshoot

The fault. The fix. Right there in the field.

Cliff walks field techs through guided diagnostics for any product, any model, any fault. Pulling from your service manuals, so they fix it on the first visit.

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See it in action

Higher first-visit fixes

Answers on-the-go

Sourced from your service docs

Seeing error code E4 on a Northwind RTU-300.

Error E4 on Northwind RTU-300 indicates a high-pressure lockout¹. Here's the troubleshooting sequence:

1.Check condenser coils² — dirty coils are the #1 cause
2.Verify refrigerant charge³ — overcharge causes high head pressure
3.Inspect condenser fan motor⁴ — confirm rotation and amperage draw

After clearing the fault, monitor discharge pressure for 15 minutes. It should stay below 410 psig⁵.

SOURCES

Northwind Error Code Reference.pdf¹

RTU-300 Troubleshooting Guide.pdf²³⁴⁵

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Trusted by service organizations cutting callback rates in half

Trusted by service organizations cutting callback rates in half

Trusted by service organizations cutting callback rates in half

Trusted by service organizations cutting callback rates in half

The before

A tech in the field. A code they've never seen.

A tech on a roof with a cryptic fault code, no idea which manual to open, and vendor support tied up on other calls.

Without Cliff

Hit a fault code you've never seen.

E7. Or AL-22. Or that one with the blinking pattern that's not in the quick-reference card.

Call the senior tech.

Voicemail. Try the next one. Voicemail.

Wait on the roof for a callback.

Customer downstairs is wondering what's taking so long.

Guess. Replace the wrong part.

Come back next week. Try again. Eat the second truck roll.

First-visit fix rate: 62%

With Cliff

Type the fault code.

"E7 on a 2022 RH-3624." Cliff pulls the diagnostic flow for that exact model and revision.

Get a guided sequence.

Step by step. Branching based on what you check. Cited from the service manual at every turn.

Fix it on the first visit.

Right part. Right procedure. Confidence to close the call.

Fewer callbacks. Lower service costs.

Right-first-time fixes cut rework and overtime, and keep customers loyal to your brand.

First-visit fix rate: 94%

How diagnostics work

Guided fixes. Not a wall of text.

Cliff turns your service manuals into interactive diagnostic flows that adapt to what the tech finds at each step. The right next step, every time.

Tell Cliff the symptom.

Fault code, error message, or just "the unit isn't cooling." Cliff matches it to the right diagnostic tree.

Cliff branches as you check.

Each answer narrows the path. Resistance reading? Voltage? Cliff routes to the next test in the sequence.

Land on the fix, with the source.

The repair procedure, the parts list, the torque spec — all cited from your service documentation.

Where techs use it

On the truck. On the roof. In the boiler room.

Cliff fits where your techs already work. Fast lookups when seconds matter, and no time to search for a manual.

Field service

"Compressor cycling on/off every 90 seconds — what's the diagnostic?"

Step-by-step flow on the phone in the field.

Field service

"Compressor cycling on/off every 90 seconds — what's the diagnostic?"

Step-by-step flow on the phone in the field.

Phone support

"Customer says E14 on a 5-ton package unit. What do I tell them?"

Triage faster. Right diagnosis, right part, first call.

Phone support

"Customer says E14 on a 5-ton package unit. What do I tell them?"

Triage faster. Right diagnosis, right part, first call.

Training

"How do I check static pressure on a variable-speed system?"

Cliff teaches in the moment. Less hand-holding.

Training

"How do I check static pressure on a variable-speed system?"

Cliff teaches in the moment. Less hand-holding.

Why it's reliable

Diagnostics your techs can trust in the field.

Model-specific, every time.

Cliff doesn't hand you generic advice. It pulls the procedure for the exact model, revision, and configuration.

Model-specific, every time.

Cliff doesn't hand you generic advice. It pulls the procedure for the exact model, revision, and configuration.

Cited at every step.

Each instruction links back to the service bulletin or manual page it came from. No mystery sources.

Cited at every step.

Each instruction links back to the service bulletin or manual page it came from. No mystery sources.

Updated with your bulletins.

When you publish a new service bulletin or revision, Cliff knows about it within hours.

Updated with your bulletins.

When you publish a new service bulletin or revision, Cliff knows about it within hours.

Fix it the first time. Every time.

See how Cliff turns your service docs into guided diagnostics your techs will actually use.

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