Series 8900SH Control Panel

Operation And Installation Manual

SECTION 5: SENSOR TROUBLESHOOTING

The wiring within the control panel from the Terminal Strip For Field Connections to the sensor input terminals on the circuit board are completed at the factory.

Inside the panel is a second set of wires from each sensor to the “Terminal Strip For Field Connections” that is generally completed by the electrical contractor.

Each pair of wires from a sensor is connected to the terminal strip inside the panel (for field wiring) and from there to the sensor input terminals on the circuit board. Below is a list of where the wires for each sensor are attached and the code that allows you to read the temperature.

SENSOR LOCATION

INPUT TERMINALS

ENTER CODE

Outside Sensor

S1

11

Return Sensor

S2

12

GENERAL TROUBLESHOOTING

If the display is showing Error Code 230, either the sensor is bad or a wire is broken. To check the wire between the input terminals on the circuit board and the sensor itself remove the circuit board cover and, using the chart above, identify the correct sensor. With a small screwdriver, loosen the two terminals and gently remove both wires. With an Ohm metor, check the resistance (continuity) between the two wires. No resistance (continuity) indicates a wire is broken. The second test is to attach a good sensor to the terminal strip in place of the one removed. If the display now reads a temperature then the old sensor is probably bad and should be replaced.

If the display is showing Error Code -40, the wires either have a short or the wires are reversed at the sensor input terminals. Each sensor has a positive wire and a negative wire that could have been reversed during installation. To test for this, remove the cover and reverse the wires. If the display now reads a temperature the problem is solved.

If the display still reads Error Code -40the wiring between the sensor terminal input and the sensor itself must be checked for shorts. Remove the wires from the terminal strip and, using an Ohm meter set at 1K, touch the Ohm motor leads together and adjust the needle to 1. Now touch the Ohm meter leads to the wires from the sensor. If the needle again goes to 1, or the and of the scale, the wires are shorted. If the needle only moves part way up the scale, the sensor is bad and must be replaced.

If you are adjusting a sensor potentiometer R26 through R31, and the display is not changing, make sure the correct monitor code for the sensor being adjusted has been entered. If the code is correct and the display still will not change, replace the sensor.

If the sensor has been replaced and the display continues to show the incorrect temperature, the control panel may be bad. Try a different sensor by switching them around on the terninal strip. If this still does not work, send the the board back to TRIAD for recalibration.

Section 5

Sensor Troubleshooting

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Panasonic 8900 SH installation manual Sensor Troubleshooting, General Troubleshooting
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8900 SH specifications

The Panasonic 8900 SH is a remarkable addition to the world of smartphones, exemplifying cutting-edge technology and user-centric design. This model stands out with its exceptional features, which cater to a diverse range of users from tech enthusiasts to everyday consumers.

One of the most notable aspects of the Panasonic 8900 SH is its sleek and sophisticated design. The device boasts a premium glass and metal finish, providing an elegant look and feel that is both modern and durable. Its ergonomic shape ensures comfortable handling, allowing users to navigate seamlessly through its vibrant display.

At the heart of the Panasonic 8900 SH lies a powerful processor, delivering impressive performance for multitasking and demanding applications. Whether you're gaming, streaming, or juggling multiple tasks, this smartphone handles it with ease, thanks to its robust CPU and ample RAM. The device is equipped with an advanced graphics processor, ensuring visually stunning experiences, whether you’re playing graphics-intensive games or viewing high-definition videos.

One of the standout features of the Panasonic 8900 SH is its camera system. The smartphone sports a high-resolution camera that takes stunning photos even in low-light environments. With advanced image stabilization and various shooting modes, photography enthusiasts can capture moments with clarity and detail. The front-facing camera is also equipped with features that enhance selfies, making it a hit among social media users.

In terms of connectivity, the Panasonic 8900 SH supports a wide range of options, including 5G capabilities, ensuring lightning-fast internet speeds and seamless video calls. The device comes with multiple sensors, including a fingerprint sensor for quick unlocking and security features, elevating user convenience.

Additionally, the Panasonic 8900 SH offers substantial internal storage space, accommodating users who download various apps, music, and media. The expandable storage option through microSD cards adds an extra layer of flexibility for storage needs.

The battery life of the Panasonic 8900 SH is another commendable feature, designed to last throughout the day with moderate to heavy use. Fast charging technology is included, allowing users to quickly recharge their devices and minimize downtime.

In conclusion, the Panasonic 8900 SH combines style, performance, and practicality, making it an excellent choice for anyone in the market for a reliable and feature-rich smartphone. Its blend of advanced technology and user-friendly characteristics makes it a noteworthy contender in the competitive smartphone space. Whether for business or personal use, this device is designed to meet the needs of today's smartphone users.
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