To Next PageTo Next PageHow to troubleshoot Honeywell Control Panel when no LEDs are illuminated?
If no LEDs are illuminated on your Honeywell Control Panel, it could be due to a couple of reasons. First, check if there is 24 Vac (±10%) across TR1 and TR2, indicating power to the board. Second, a shorted wire could be the issue. In this case, check the fuse; if it's hot, there's likely a short in the thermostat, damper, or Zone-A-Lone wiring.
What to do if Add-A-Zone is not operating on my Honeywell Control Panel?
If the Add-A-Zone feature isn't working on your Honeywell Control Panel, there are several things to check: * Verify the DIP switch settings on the TAZ panels to ensure they are correctly configured. * Check the wiring of AZ1 and AZ2 to confirm they are wired correctly. * Ensure that AZ1 and AZ2 are at least 12 inches away from any line voltage wiring. * Make sure the transformers are in-phase.
General| Power Supply | 24 VAC |
|---|---|
| Operating Temperature | 32°F to 122°F (0°C to 50°C) |
| Communication | Proprietary |
| Display | LCD |
| Zones Supported | Up to 3 |
Controls single-stage, multi-stage, conventional or heat pump equipment for 2 or 3 zones.
Highlights multi-stage control, zone expansion, and thermostat compatibility.
Details electrical requirements, physical dimensions, mounting, and wiring specifications.
Lists compatible thermostat models for various system types.
Specifies damper types and their terminal connections for zone control.
Lists Honeywell damper types, their bypass ratings, and applications.
Details essential accessories like transformers and static pressure regulators.
Provides instructions and cautions for mounting the TZ-3 panel and thermostats.
Outlines wiring procedures for thermostats, dampers, sensors, and HVAC equipment.
Shows wiring for heat pump thermostats with single Y or Y1/W1 terminals.
Details wiring for AOBD, ARD, ZD, and MARD/CDO-51 dampers.
Illustrates ML6161 actuator wiring and 24V transformer connections.
Depicts the connection of the DA temperature sensor to the TL terminals.
Describes wiring for multi-stage heating and cooling equipment.
Details wiring for heat pump systems, including auxiliary heat.
Shows wiring for heat pumps with auxiliary heat systems.
Details wiring for water source heat pumps with specific system configurations.
Guides through initial setup, including switch positions and powering up the TZ-3.
Describes procedures to verify correct heating, cooling, and damper operation.
Explains zone control logic for heating, cooling, and purge cycles.
Details multi-stage operation and individual zone fan control.
Covers staging based on zone count and heat pump thermostat usage.
Explains emergency heat control and operation with multi-stage thermostats.
Instructions for rebooting the microprocessor and operating the Zone-A-Lone feature.
Details DA sensor setup and the function of the built-in circuit breaker.
A table listing common issues, their causes, and recommended actions.
Details the purpose of each DIP switch and its available settings.
Explains the status indicated by different LED colors and patterns.
A detailed diagram showing all terminals, components, and features of the TZ-3 control panel.
