My Honeywell prestige thermostat screen is completely blank after a power surge, and removing the faceplate to check the C wire shows 24v present. What could cause the internal relay to fail like this?
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The searches the AI actually ran for this prompt.
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My Honeywell prestige thermostat screen is completely blank after a power surge, and removing the faceplate to check the C wire shows 24v present. What could cause the internal relay to fail like this?
2 real searches · 1 real-search pass
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Classifying 2 queries…
Searches and sources
ChatGPT2 real searches · gpt-6
Honeywell Prestige thermostat blank display 24 VAC R C troubleshooting power surge internal fuse Google ↗
Honeywell Prestige IAQ thermostat installation manual power requirements blank display R C voltage Google ↗
- Honeywell Prestige IAQ THX9321, THX9421 Installation Guide · manualzz.com
- 69-2739-02 · fcc.report
- Why Won't My Thermostat Screen Power Up? · honeywellhome.com
- HONEYWELL PRESTIGE IAQ YTHX9421 INSTALLATION MANUAL Pdf Download · manualslib.com
Queries
2 queries · click a column to sort
| Query / type | Search | Intent | Query class | Routing format | Cluster | Freq ↓ | Weight |
|---|---|---|---|---|---|---|---|
Honeywell Prestige thermostat blank display 24 VAC R C troubleshooting power surge internal fuse OBSERVED | Google ↗ AI Mode ↗ | — | — | — | — | 1x of 1 | |
Honeywell Prestige IAQ thermostat installation manual power requirements blank display R C voltage OBSERVED | Google ↗ AI Mode ↗ | — | — | — | — | 1x of 1 |