ServiceIQ

Field diagnostics

Checking

CURRENT CALL

No active call

Start a new call to begin.

StatusOpen Next stepEnter the complaint and equipment.

Current Call ProgressNot started

AirflowPending

ElectricalPending

RefrigerantPending

DiagnosisOpen

Diagnostic setup

Customer complaint

Select diagnostic flow

Current operating status

Manufacturer

Equipment type

Model number

Serial number

Tonnage

Refrigerant

Metering device

Control type

Fault code

Conditions

Indoor temperature °F

Outdoor temperature °F

Thermostat setpoint °F

Thermostat demand

Initial technician notes

Active Call

Flow—

Complaint—

Equipment—

Fault—

StatusWaiting to begin

0% complete

STEP 0

Start a service call first

Enter the complaint, equipment and diagnostic flow, then launch TechSec.

Reference & Reasoning

ServiceTechIQ logic

Manufacturer information will appear here when the selected equipment and fault match a knowledge pack.

TechSec will explain why a test matters without burying the technician in unnecessary detail.

Safety rule
ServiceTechIQ never instructs a technician to permanently bypass a safety device.

Analyze the entered readings

TechSec flags abnormal values, enforces Airflow Before Charge, ranks issues, and recommends the next separating test.

Return static (in. w.c.)

Supply static (in. w.c.)

TESP

Rated TESP

Measured CFM

Target CFM

Return air temperature °F

Supply air temperature °F

Temperature split

TESP uses the absolute value of return static plus supply static.

Initial refrigerant snapshotPT data v1.0.1

Refrigerant

Operating mode

Metering device

System stabilized?

Low-side pressure PSIG

Suction-line temperature °F

Evaporator saturation (dew) °F

Calculated superheat °F

High-side pressure PSIG

Liquid-line temperature °F

Condenser saturation (bubble) °F

Calculated subcooling °F

Manual SH override

Overrides are marked in the report; raw inputs stay saved.

Manual SC override

Compression ratio

Manufacturer target subcooling °F

Indoor wet bulb °F

Outdoor dry bulb °F

Target superheat °F (screening)

Generic wet-bulb/dry-bulb screening only. Manufacturer charging data controls.

Actual vs target

Condenser coil condition

Outdoor fan verified?

Select a refrigerant, then enter pressure and line temperature.

Equipment voltage type

Rated-voltage reference

Nameplate voltage override

Measured line voltage VAC

Control voltage VAC

Expected control voltage VAC

Voltage L1 to ground

Voltage L2 to ground

Compressor amps

Outdoor fan amps

Outdoor fan FLA / nameplate amps

Blower motor amps

Blower FLA / nameplate amps

Compressor RLA / nameplate amps

Blower motor amps

Blower RPM / speed setting

Outdoor fan RPM

Outdoor fan rotation correct?

Capacitor voltage rating

Capacitor tolerance

HERM rated µF

HERM measured µF

Enter rated and measured HERM values.

FAN rated µF

FAN measured µF

Enter rated and measured FAN values.

ServiceTechIQ marks a capacitor failed when the measured capacitance is more than 6% above or below its rated µF. The voltage rating is recorded separately.

Indoor relative humidity %

Outdoor relative humidity %

Return wet bulb °F

Supply wet bulb °F

Heat kit size kW

Heat strip amperage

Entering air temperature °F

Leaving air temperature °F

Communication voltage 1 to C

Communication voltage 2 to C

Bias difference

Network devices discovered

Communication notes

Compression Ratio

Suction pressure PSIG

Discharge pressure PSIG

Atmospheric pressure PSI

Calculated ratio

Uses absolute pressure: discharge PSIA ÷ suction PSIA.

Sensible, Latent & Total Capacity

Measured CFM

Air-density correction factor

Return dry bulb °F

Return wet bulb °F

Supply dry bulb °F

Supply wet bulb °F

Barometric pressure kPa

Enter CFM plus return and supply dry-bulb/wet-bulb measurements.

Capacitor Under Load

Live-voltage test: Qualified technicians only. Use properly rated PPE and test equipment. Follow company and manufacturer safety procedures.

Section

Rated capacitance µF

Current through capacitor circuit A

Voltage across capacitor VAC

Frequency Hz

At 60 Hz, µF ≈ amps × 2652 ÷ volts.

Final refrigerant snapshot

Final refrigerant

Final operating mode

Final system stabilized?

Final suction pressure

Final suction-line temperature

Final evaporator saturation

Final superheat

Final discharge pressure

Final liquid-line temperature

Final condenser saturation

Final subcooling

Final return static

Final supply static

Final TESP

Final rated TESP

Final CFM

Final target CFM

Final return-air temperature

Final supply-air temperature

Final temperature split / rise

Final blower amps

Blower FLA / nameplate

Final blower speed / airflow setting

Observed runtime (minutes)

Final operating notes

Enter final pressures and line temperatures to calculate final SH/SC.

Repair category

Component

Action performed

Airflow-affecting repair Refrigerant circuit opened or charge adjusted Electrical/control-affecting repair

Structured repair notes

Proof rule: A blower motor is confirmed failed only after valid demand, correct motor line voltage, the correct motor command, intact harnesses, and free mechanical rotation are documented.

Motor architecture

Identification method

Demand type

Motor line voltage

Command type

Expected command

Measured command

Command present?

Mechanical condition

Harness condition

Board output status

Diagnosis confidence

Manufacturer procedure used

Manufacturer reference

Missing proof / remaining test

Select the motor architecture to display the required command test.

Functional verification

Functional reason / evidence

Performance verification

Performance reason / evidence

Original complaint resolved?

Functional and performance verification are tracked separately.

TechSec Reading Analysis

Review all entered readings together, rank the issues, and select the next separating test.

Waiting for readings

Enter the applicable readings above, then press Analyze. Blank fields are allowed—TechSec will identify important missing evidence.

Customer explanation

No active report yet.

Report Completeness

Run the check before finishing the call.

Backup & Sync

StatusSaved Locally

Last local save—

Last syncNot synced

Refrigerant PT Charts

Refrigerant

Find by temperature °F

Find by pressure PSIG

Select a refrigerant or open this chart from an active call.

Temp °F	Bubble PSIG	Dew PSIG

Knowledge pack ready

Amana S-Series Outdoor

R-410A S-Series and Enhanced Capacity outdoor-unit service reference.

Communication • Startup • Charging • Airflow • Wiring • Troubleshooting

Communication: pages 20–22
Startup and charging: pages 18–30
Operation and airflow: pages 30–32
Wiring: pages 33–38
Troubleshooting: pages 43–47
Mode display: page 48 onward
7-segment display: page 54 onward
Startup checklist: page 58

Knowledge pack ready

Amana AHVE Air Handler

AHVE installation, operation, airflow, heat-kit and troubleshooting reference.

PCB • Fault recall • Network • Faults • Heat kits • Wiring

PCB diagram: page 14
Fault recall: pages 16–17
Network troubleshooting: pages 18–19
Fault codes: pages 20–22
Wiring diagram: page 25
Startup checklist: page 27

Knowledge pack ready

Carrier 27VNA0 Infinity

Variable-speed R-454B heat-pump installation, charging, component and diagnostic reference.

Charging • PCM/VFD • Sensors • Compressor • Fan • 125 code entries

Start-up and charging: pages 8-13
Major components: pages 15-18
Troubleshooting and sensors: pages 19-21
Diagnostic code table: page 22
Malfunction lockouts: page 23

Knowledge pack ready

Carrier FE5B Fan Coil

Communicating R-454B fan-coil airflow, A2L dissipation, ECM and status-code reference.

350 CFM/ton • A2L Dissipation • ECM • Communication • Status Codes

Leak dissipation system: pages 10-12
Start-up and LED operation: pages 13-14
ECM and fan-coil troubleshooting: pages 14-16
Airflow delivery charts: page 17 onward

For browser security, a local PDF must be linked again after closing the prototype. The embedded page references remain available offline.

🎙️ MicrophoneNot Enabled

Used only while TechSec Voice or local speech capture is active.

A microphone indicator is controlled by the phone or browser while access is active.

🔔 NotificationsNot Enabled

Reserved for future assigned-call alerts, reminders, and completed-report updates.

On iPhone and iPad, ServiceTechIQ must be installed on the Home Screen before web push can be enabled.

ᛒ Bluetooth DevicesComing Soon

Future support for compatible probes and field tools. No Bluetooth request is made in this build.

ServiceTechIQ will request device access only after the technician taps Connect Device.

📈 Usage AnalyticsOff

Optional app-performance and feature-usage information. It is not required to use ServiceTechIQ.

Allow usage analytics

The current field beta does not transmit analytics; this setting stores your preference for the future app build.

📍 Location ServicesNot Enabled

ServiceTechIQ does not request location in this build. A future job-site feature must explain its purpose before asking.

Build

ServiceTechIQv8.7 Field RC

UI build8.7.0-rc1

Diagnostic rules1.5

PT data1.0.1 official-core

Cachev8-7-rc1-cache-1

Live Status

NetworkChecking

TechSec APIChecking

API version—

Offline app dataAvailable

Installed appChecking

Last syncNever

Training isolation: Cases started here are labeled TRAINING and cannot sync as customer service reports.

Training controls

Select a scenario to begin.

Call setup

Complaint System Type Capacity Metering Device

🌬 Airflow Not checked

Measured CFM

Return static Supply static

Target CFM and TESP calculate automatically.

⚡ Electrical Not checked

Equipment voltage type Voltage reference Nameplate override Measured line voltage Control voltage HERM rated µF HERM measured µF FAN rated µF FAN measured µF Compressor amps Blower amps Outdoor fan amps

Capacitors are evaluated against a ±6% tolerance.

❄ Refrigeration Not checked

Suction psig Liquid psig Superheat °F Subcooling °F

Condenser coil and outdoor fan verified

SH/SC drive pattern severity; pressures add evidence.

ServiceTechIQ Analysis

Waiting for data

Enter what you measured. Blank fields are allowed—ServiceTechIQ will identify the highest-value missing test.

TechSec AI Voice

Backend: https://serviceiq-api.bushtodd1.workers.dev

Disconnected

Connect before using hold-to-talk. After connection, hold the round microphone while speaking and release when finished. Mason will answer through the phone speaker.

Security: the permanent OpenAI key stays inside the Cloudflare Worker secret. This page sends only a WebRTC offer to the ServiceTechIQ API.

Local speech-to-fields fallback

Use this microphone when AI voice is offline, or type below.

Technician transcript

AI and local transcripts appear here. Review them before applying readings.

Mason Response

Connect TechSec Voice and hold the microphone to begin. ServiceTechIQ local diagnostic analysis remains available offline.

Field-test beta
AI voice requires internet access and OpenAI API billing. Calculators, saved cases, reports, and the local diagnostic engine remain available without the AI connection.

System Information

Equipment Capacity Measured CFM Return Static Supply Static

No active call

New Call

TechSec Guided Diagnosis

Active Call

Reference & Reasoning

Readings & Calculators

Analyze the entered readings

TechSec Reading Analysis

Automatic Service Report

Report Completeness

Backup & Sync

Was TechSec helpful on this call?

Diagnostic Flows

Fault Code Lookup

Manuals & Reference

Amana S-Series Outdoor

Amana AHVE Air Handler

Carrier 27VNA0 Infinity

Carrier FE5B Fan Coil

Permissions & Privacy

🎙️ MicrophoneNot Enabled

🔔 NotificationsNot Enabled

ᛒ Bluetooth DevicesComing Soon

📈 Usage AnalyticsOff

📍 Location ServicesNot Enabled

App Health & Version

Build

Live Status

Demo & Training

Saved Cases

Unified Field Diagnosis

🌬 Airflow Not checked

⚡ Electrical Not checked

❄ Refrigeration Not checked

ServiceTechIQ Analysis

TechSec Voice

TechSec AI Voice

Local speech-to-fields fallback

Mason Response

Airflow Diagnostic Engine

System Information