Tracer® ZN.010

and ZN.510

Troubleshooting

Table 15. Fan Outputs do not Energize

Probable Cause

Explanation

Random start

After power-up, the controller always observes a random start that varies

observed

between 0 and 25 seconds. The controller remains off until the random start

 

time expires.

Power-up control wait

When power-up control wait is enabled (non-zero time), the controller remains

 

off until one of two conditions occurs:

 

1. The controller exits power-up control wait once it receives communicated

 

information.

 

2. The controller exits power-up control wait once the power-up control wait

 

time expires.

Cycling fan operation

When the fan mode switch is in the auto postion, the unit fan cycles off when

 

there is no call for heating or cooling. The heating/cooling sources cycle on or

 

off periodically with the unit fan to match the capacity according to pulse-width-

 

modulation (PWM) logic.

Unoccupied operation

The fan cycles with capacity when the unit is in unoccupied mode. This occurs

 

even if the unit is in continuous fan operation. While unoccupied, the fan cycles

 

on or off with heating/cooling to provide varying amounts of heating or cooling to

 

the space. to match the capacity according to pulse-width-modulation

 

(PWM) logic.

Fan mode off

When using the local fan mode switch to determine the fan operation, the off

 

position controls the unit fan to off.

Requested mode: off

It is possible to communicate the operating mode (such as off, heat, and

 

cool) to the controller. When “off” is communicated to the controller, the unit

 

controls the fan to off. The unit is not capable of heating or cooling when the

 

controller is in this mode.

Diagnostic present

A specific list of diagnostics effects fan operation. For more information, see the

 

“Diagnostics” section on page 50.

No power to the

If the controller does not have power, the unit fan will not operate. For the

controller

controller to operate normally, it must have an input voltage of 24 VAC. When

 

the green LED is off continuously, the controller does not have sufficient power

 

or the controller has failed.

Manual output test

The controller includes a manual output test sequence to verify binary output

 

operation and the associated wiring. However, based on the current step in the

 

test sequence, the unit fan may not be powered on. Refer to the “Manual

 

Output Test” section on page 51.

Unit wiring

The wiring between the controller outputs and the fan relays and contacts must

 

be present and correct for normal fan operation. Refer to the typical unit wiring

 

diagrams in the Appendix of this manual.

UNT-IOM-6

53

Page 53
Image 53
Trane LO manual Troubleshooting, Fan Outputs do not Energize Probable Cause Explanation

LO specifications

Trane LO is a cutting-edge solution in the HVAC sector, designed with advanced engineering and smart technologies to meet diverse climate control needs. Renowned for its reliability and efficiency, Trane LO offers a wide array of features that set it apart in the market.

One of the core characteristics of Trane LO is its energy efficiency. Equipped with variable speed compressors, the system can adjust its output according to the cooling or heating demand, ensuring optimal energy use. This feature not only reduces energy consumption but also lowers utility bills for users. Additionally, Trane LO units often come with a SEER (Seasonal Energy Efficiency Ratio) rating that ensures top performance during hotter months.

Incorporating state-of-the-art technology, Trane LO features Smart Technology integration. Through IoT (Internet of Things) capabilities, users can monitor and control their HVAC systems remotely via smartphones or smart home devices. This feature promotes convenience and ensures that energy use can be optimized from anywhere, giving users greater control over their indoor climate.

Another standout technology in Trane LO is its use of environmentally friendly refrigerants. The system is designed to utilize low-GWP (Global Warming Potential) refrigerants, making it compliant with modern environmental standards and contributing to a greener planet.

The Trane LO also emphasizes durability. Constructed with high-quality materials, including weather-resistant finishes, these units are built to withstand various environmental conditions, ensuring they maintain peak performance over the years.

Noise reduction is another critical aspect of the Trane LO line. With features such as sound blankets and vibration dampening technology, the units operate quietly, ensuring that the comfort of users is not compromised by disruptive noise levels.

Maintenance is simplified with the Trane LO, as several units are engineered for easy access to essential components, promoting hassle-free servicing. This is vital for prolonging the lifespan of the system and reducing maintenance costs.

In summary, Trane LO represents a fusion of energy efficiency, advanced technology, environmental responsibility, durability, and user-friendly features. Whether for residential or commercial applications, Trane LO systems stand as a reliable choice for effective climate control.