Why does my Tekmar 527 Thermostat display a BUS ERROR?
A BUS ERROR on your Tekmar Thermostat typically indicates a wiring fault. Check for any loose wires or short circuits between the tN4 and C wires at the system control. The error should clear automatically once the wiring issue is resolved. If you intentionally removed the thermostat from the system, press the up and down buttons together to clear the error message.
What to do if my Tekmar 527 Thermostat shows a DEVICE LIMIT error?
The DEVICE LIMIT error on your Tekmar Thermostat means that the number of devices is too high. Lower the device count to 24 or less. If possible, move devices to other tekmarNet® busses. The error will automatically clear once the number of devices on the tekmarNet® bus is at 24 or lower.
What does 'FLOOR SENSOR OPEN CIRCUIT' mean on my Tekmar 527 and how to fix it?
A 'FLOOR SENSOR OPEN CIRCUIT' error on your Tekmar Thermostat indicates a problem with the floor sensor's wiring. Check for loose or damaged wires. Locate and repair the problem as described in the Data Brochure D 079. The error clears once the floor sensor fault is corrected. If the floor sensor is intentionally removed, locate the Room Sensor setting in the Adjust menu and set to On. Power the thermostat down and up to clear the error.
How to fix FLOOR SENSOR SHORT CIRCUIT on my Tekmar 527 Thermostat?
A FLOOR SENSOR SHORT CIRCUIT error on your Tekmar Thermostat indicates damaged wires. Check for damaged wires and repair the problem as described in the Data Brochure D 079. The error will clear once the floor sensor fault is corrected.
How to resolve OUTDOOR SENSOR OPEN CIRCUIT error on Tekmar Thermostat?
An 'OUTDOOR SENSOR OPEN CIRCUIT' error on your Tekmar Thermostat means there's an issue with the outdoor sensor's wiring. Check for loose or damaged wires and repair the problem as described in the Data Brochure D 070. The error clears once the outdoor sensor fault is corrected. If the outdoor sensor is intentionally removed, power the thermostat down and up to clear the error.
How to resolve OUTDOOR SENSOR SHORT CIRCUIT error on Tekmar Thermostat?
An 'OUTDOOR SENSOR SHORT CIRCUIT' error on your Tekmar Thermostat indicates damaged wires in the outdoor sensor circuit. Check for damaged wires and repair the problem as described in the Data Brochure D 070. The error clears after the outdoor sensor fault is corrected.
What does PORT ERROR mean on my Tekmar 527 Thermostat?
A PORT ERROR on your Tekmar Thermostat indicates an issue with the port connection. Move the thermostat’s tN2 wires to an unused tN2 port on the control.
What does COOL MASTER ERROR mean on my Tekmar 527 Thermostat and how to fix it?
A COOL MASTER ERROR on your Tekmar Thermostat indicates an issue with the cool group master settings. The error clears once either the other cool group master changes its group number or switch setting number 3 is set to none (On position).
What does COOL MEMBER ERROR mean on my Tekmar 527 and how to resolve it?
A COOL MEMBER ERROR on your Tekmar Thermostat suggests an issue with the cool group member settings. The error clears once the thermostat detects a cool group master or switch setting number 3 is set to none (On position).
What does ADDRESS ERROR mean on my Tekmar Thermostat and how to solve it?
An ADDRESS ERROR on your Tekmar Thermostat indicates an issue with the device's address. The error clears automatically once this thermostat is given a new manually set address or if the thermostat is set to automatic addressing.
Overview of the tekmarNet 2 Thermostat 527 features.
Overview of the tekmarNet 2 Thermostat 528 features.
Overview of the tekmarNet 2 Thermostat 530 features.
Important safety warnings regarding installation and operation.
Guidelines for proper thermostat placement and wiring during construction.
Configuration options using DIP switches on the Thermostat 527.
Instructions for adjusting the room temperature setting.
How thermostats provide feedback to system controls for efficiency.
Troubleshooting steps for the CONTROL ERROR (E01).
Troubleshooting steps for the PORT ERROR.
Troubleshooting steps for the BUS ERROR.
Troubleshooting steps for exceeding the device limit on the bus.
Troubleshooting steps for duplicate thermostat addresses.
Troubleshooting steps for a short circuit in the room sensor.
Troubleshooting steps for an open circuit in the room sensor.
Troubleshooting steps for the COOL MASTER ERROR.
Troubleshooting steps for the COOL MEMBER ERROR.
Troubleshooting steps for a floor sensor short circuit.
Troubleshooting steps for a floor sensor open circuit.
Troubleshooting steps for an outdoor sensor short circuit.
Troubleshooting steps for an outdoor sensor open circuit.
General| Category | Thermostat |
|---|---|
| Type | Programmable |
| Voltage | 24 VAC |
| Display | LCD |
| Power Source | Transformer |
| Wiring | 2-wire |
| Temperature Sensor | Built-in |
| Stages | Single Stage |
| Programming | 7-day programmable |
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