Honeywell TrueZONE HZ432 User Manual
Honeywell boiler user manual
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Also See for TrueZONE HZ432:
- Installation manual (24 pages) ,
- Installing manual (2 pages) ,
- Manual (13 pages)
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Trying to understand HZ432 Zone lights. Zone 1 has all three lights on red on both boxes and not changing or blinking at all over several minutes of observation. Zone 2 has one red and one green on one box and green on other side. I never recall having seen all three red at the same time on a Zone in multi-year usage. Is there an error occurring in Zone 1 operation?
If all three lights on Zone 1 (HEAT 1, HEAT 2, and HEAT 3) are solid red, it indicates that the system is operating in all three heating stages. This is not necessarily an error but could suggest that the system is running at maximum heating capacity. However, if this is unexpected or occurs continuously, it may indicate a configuration issue or a problem with the thermostat or zone control. Checking the system settings and sensors is recommended.
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