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Hello all!

I've been trying to tighten up my baseline model before submitting to LEED, and wanted to dig into a severe error that might raise some flags. The model is of a large k-12 school, and I'm using the HVACTemplate:System:VAV setup with a water-cooled chiller. I'm getting a controller error for the cooling coil that basically says the function is wrong (Reverse) and that the controller-sensed temperature is above the setpoint (see error language below).

Now the weird thing is, by comparing my file to the HVACTemplate-5ZoneVAVWaterCooled.idf example file, I was able to identify the input that causes the severe error. If you change the "!Chilled Water Setpoint Reset Type" to "outdoorairtemperaturereset" in the HVACTemplate:Plant:ChilledWaterLoop, this creates the error. What was even stranger is that while in the example file it does not use temperature reset for its chilled water loop template object, it does fill in the temperature setpoint and outside air high and low fields. When I switch their reset from "none" to "outdoorairtemperaturereset," it gets the same error controller error!

So my questions are:

1. Why doesn't the "outdoorairtemperaturereset" for the chilled water loop in the HHVACTemplate-5ZoneVAVWaterCooled.idf example file work?
2. Is it a problem the LEED reviewer will make me fix before proceeding (because all baseline models need to model chilled water outside air temperature reset).

3. Is the fix the same for my model? Here's a link to the .idf and error file.

   Thanks for any help!

-Jacob Dunn

* Severe * FindRootSimpleController: Controller error for controller = "VAV SYS 1 COOLING COIL CONTROLLER" * ~~~ * Environment=New Orleans Lakefront Ap LA USA TMY3 WMO#=722315, at Simulation time=01/14 19:45 - 20:00 * ~~~ * Controller function is inconsistent with user specified controller action = Reverse action * ~~~ * Actuator will be set to maximum action * ~~~ * Controller control type=Temperature * ~~~ * Controller temperature setpoint = 11.82 [C] * ~~~ * Controller sensed temperature = 12.17 [C] * ~~~ * Controller actuator mass flow rate set to 1.26 [kg/s] * ~~~ * Controller actuator temperature = 12.20 [C] * ~~~ * Note: Chilled water coils should be reverse action and the entering chilled * ~~~ * water temperature (controller actuator temperature) should be below the setpoint temperature * ~~~ * Note: Hot water coils should be normal action and the entering hot * ~~~ * water temperature (controller actuator temperature) should be above the setpoint temperature

I've been trying to tighten up my baseline model before submitting to LEED, and wanted to dig into a severe error that might raise some flags. The model is of a large k-12 school, and I'm using the HVACTemplate:System:VAV HVACTemplate:System:VAV setup with a water-cooled chiller. I'm getting a controller error for the cooling coil that basically says the function is wrong (Reverse) and that the controller-sensed temperature is above the setpoint (see error language below).

Now the weird thing is, by comparing my file to the HVACTemplate-5ZoneVAVWaterCooled.idf HVACTemplate-5ZoneVAVWaterCooled.idf example file, I was able to identify the input that causes the severe error. If you change the "!Chilled Chilled Water Setpoint Reset Type" to "outdoorairtemperaturereset" Type to outdoorairtemperaturereset in the HVACTemplate:Plant:ChilledWaterLoop, HVACTemplate:Plant:ChilledWaterLoop, this creates the error. What was even stranger is that while in the example file it does not use temperature reset for its chilled water loop template object, it does fill in the temperature setpoint and outside air high and low fields. When I switch their reset from "none" to "outdoorairtemperaturereset," none to outdoorairtemperaturereset, it gets the same error controller error!

So my questions are:

1. Why doesn't the "outdoorairtemperaturereset" for the chilled water loop in the HHVACTemplate-5ZoneVAVWaterCooled.idf example file work?
2. Is it a problem the LEED reviewer will make me fix before proceeding (because all baseline models need to model chilled water outside air temperature reset).

3. Is the fix the same for my model? Here's a link to the .idf and error file.

Thanks for any help!

   ** Severe  * ** FindRootSimpleController: Controller error for controller = "VAV SYS 1 COOLING COIL CONTROLLER"
   *   ~~~   * **   ~~~   **  Environment=New Orleans Lakefront Ap LA USA TMY3 WMO#=722315, at Simulation time=01/14 19:45 - 20:00
   *   ~~~   * **   ~~~   **   Controller function is inconsistent with user specified controller action = Reverse action
   *   ~~~   * **   ~~~   **   Actuator will be set to maximum action
   *   ~~~   * **   ~~~   ** Controller control type=Temperature
   *   ~~~   * **   ~~~   ** Controller temperature setpoint = 11.82 [C]
   *   ~~~   * **   ~~~   ** Controller sensed temperature = 12.17 [C]
   *   ~~~   * **   ~~~   ** Controller actuator mass flow rate set to 1.26 [kg/s]
   *   ~~~   * **   ~~~   ** Controller actuator temperature = 12.20 [C]
   *   ~~~   * **   ~~~   **   Note: Chilled water coils should be reverse action and the entering chilled
   *   ~~~   * **   ~~~   **         water temperature (controller actuator temperature) should be below the setpoint temperature
   *   ~~~   * **   ~~~   **   Note: Hot water coils should be normal action and the entering hot
   *   ~~~   * **   ~~~   **         water temperature (controller actuator temperature) should be above the setpoint temperature
temperature

I've been trying to tighten up my baseline model before submitting to LEED, and wanted to dig into a severe error that might raise some flags. The model is of a large k-12 school, and I'm using the HVACTemplate:System:VAV setup with a water-cooled chiller. I'm getting a controller error for the cooling coil that basically says the function is wrong (Reverse) and that the controller-sensed temperature is above the setpoint (see error language below).

Now the weird thing is, by comparing my file to the HVACTemplate-5ZoneVAVWaterCooled.idf example file, I was able to identify the input that causes the severe error. If you change the Chilled Water Setpoint Reset Type to outdoorairtemperaturereset in the HVACTemplate:Plant:ChilledWaterLoop, this creates the error. What was even stranger is that while in the example file it does not use temperature reset for its chilled water loop template object, it does fill in the temperature setpoint and outside air high and low fields. When I switch their reset from none to outdoorairtemperaturereset, it gets the same error controller error!

So my questions are:

1. Why doesn't the "outdoorairtemperaturereset" for the chilled water loop in the HHVACTemplate-5ZoneVAVWaterCooled.idf example file work?
2. Is it a problem the LEED reviewer will make me fix before proceeding (because all baseline models need to model chilled water outside air temperature reset).
3. Is the fix the same for my model? Here's a link to the .idf and error file.

Thanks for any help!

   ** Severe  ** FindRootSimpleController: Controller error for controller = "VAV SYS 1 COOLING COIL CONTROLLER"
   **   ~~~   **  Environment=New Orleans Lakefront Ap LA USA TMY3 WMO#=722315, at Simulation time=01/14 19:45 - 20:00
   **   ~~~   **   Controller function is inconsistent with user specified controller action = Reverse action
   **   ~~~   **   Actuator will be set to maximum action
   **   ~~~   ** Controller control type=Temperature
   **   ~~~   ** Controller temperature setpoint = 11.82 [C]
   **   ~~~   ** Controller sensed temperature = 12.17 [C]
   **   ~~~   ** Controller actuator mass flow rate set to 1.26 [kg/s]
   **   ~~~   ** Controller actuator temperature = 12.20 [C]
   **   ~~~   **   Note: Chilled water coils should be reverse action and the entering chilled
   **   ~~~   **         water temperature (controller actuator temperature) should be below the setpoint temperature
   **   ~~~   **   Note: Hot water coils should be normal action and the entering hot
   **   ~~~   **         water temperature (controller actuator temperature) should be above the setpoint temperature

I've been trying to tighten up my baseline model before submitting to LEED, and wanted to dig into a severe error that might raise some flags. The model is of a large k-12 school, and I'm using the HVACTemplate:System:VAV setup with a water-cooled chiller. I'm getting a controller error for the cooling coil that basically says the function is wrong (Reverse) and that the controller-sensed temperature is above the setpoint (see error language below).

Now the weird thing is, by comparing my file to the HVACTemplate-5ZoneVAVWaterCooled.idf example file, I was able to identify the input that causes the severe error. If you change the Chilled Water Setpoint Reset Type to outdoorairtemperaturereset in the HVACTemplate:Plant:ChilledWaterLoop, this creates the error. What was even stranger is that while in the example file it does not use temperature reset for its chilled water loop template object, it does fill in the temperature setpoint and outside air high and low fields. When I switch their reset from none to outdoorairtemperaturereset, it gets the same error controller error!

So my questions are:

1. Why doesn't the "outdoorairtemperaturereset" for the chilled water loop in the HHVACTemplate-5ZoneVAVWaterCooled.idf example file work?
2. Is it a problem the LEED reviewer will make me fix before proceeding (because all baseline models need to model chilled water outside air temperature reset).
3. Is the fix the same for my model? Here's a link to the .idf and error file.

Thanks for any help!

   ** Severe  ** FindRootSimpleController: Controller error for controller = "VAV SYS 1 COOLING COIL CONTROLLER"
   **   ~~~   **  Environment=New Orleans Lakefront Ap LA USA TMY3 WMO#=722315, at Simulation time=01/14 19:45 - 20:00
   **   ~~~   **   Controller function is inconsistent with user specified controller action = Reverse action
   **   ~~~   **   Actuator will be set to maximum action
   **   ~~~   ** Controller control type=Temperature
   **   ~~~   ** Controller temperature setpoint = 11.82 [C]
   **   ~~~   ** Controller sensed temperature = 12.17 [C]
   **   ~~~   ** Controller actuator mass flow rate set to 1.26 [kg/s]
   **   ~~~   ** Controller actuator temperature = 12.20 [C]
   **   ~~~   **   Note: Chilled water coils should be reverse action and the entering chilled
   **   ~~~   **         water temperature (controller actuator temperature) should be below the setpoint temperature
   **   ~~~   **   Note: Hot water coils should be normal action and the entering hot
   **   ~~~   **         water temperature (controller actuator temperature) should be above the setpoint temperature

I've been trying to tighten up my baseline model before submitting to LEED, and wanted to dig into a severe error that might raise some flags. The model is of a large k-12 school, and I'm using the HVACTemplate:System:VAV setup with a water-cooled chiller. I'm getting a controller error for the cooling coil that basically says the function is wrong (Reverse) and that the controller-sensed temperature is above the setpoint (see error language below).

Now the weird thing is, by comparing my file to the HVACTemplate-5ZoneVAVWaterCooled.idf example file, I was able to identify the input that causes the severe error. If you change the Chilled Water Setpoint Reset Type to outdoorairtemperaturereset in the HVACTemplate:Plant:ChilledWaterLoop, this creates the error. What was even stranger is that while in the example file it does not use temperature reset for its chilled water loop template object, it does fill in the temperature setpoint and outside air high and low fields. When I switch their reset from none to outdoorairtemperaturereset, it gets the same error controller error!

So my questions are:

1. Why doesn't the "outdoorairtemperaturereset" for the chilled water loop in the HHVACTemplate-5ZoneVAVWaterCooled.idf example file work?
2. Is it a problem the LEED reviewer will make me fix before proceeding (because all baseline models need to model chilled water outside air temperature reset).
3. Is the fix the same for my model? Here's a link to the .idf and error file.

Thanks for any help!

   ** Severe  ** FindRootSimpleController: Controller error for controller = "VAV SYS 1 COOLING COIL CONTROLLER"
   **   ~~~   **  Environment=New Orleans Lakefront Ap LA USA TMY3 WMO#=722315, at Simulation time=01/14 19:45 - 20:00
   **   ~~~   **   Controller function is inconsistent with user specified controller action = Reverse action
   **   ~~~   **   Actuator will be set to maximum action
   **   ~~~   ** Controller control type=Temperature
   **   ~~~   ** Controller temperature setpoint = 11.82 [C]
   **   ~~~   ** Controller sensed temperature = 12.17 [C]
   **   ~~~   ** Controller actuator mass flow rate set to 1.26 [kg/s]
   **   ~~~   ** Controller actuator temperature = 12.20 [C]
   **   ~~~   **   Note: Chilled water coils should be reverse action and the entering chilled
   **   ~~~   **         water temperature (controller actuator temperature) should be below the setpoint temperature
   **   ~~~   **   Note: Hot water coils should be normal action and the entering hot
   **   ~~~   **         water temperature (controller actuator temperature) should be above the setpoint temperature

I've been trying to tighten up my baseline model before submitting to LEED, and wanted to dig into a severe error that might raise some flags. The model is of a large k-12 school, and I'm using the HVACTemplate:System:VAV setup with a water-cooled chiller. I'm getting a controller error for the cooling coil that basically says the function is wrong (Reverse) and that the controller-sensed temperature is above the setpoint (see error language below).

Now the weird thing is, by comparing my file to the HVACTemplate-5ZoneVAVWaterCooled.idf example file, I was able to identify the input that causes the severe error. If you change the Chilled Water Setpoint Reset Type to outdoorairtemperaturereset in the HVACTemplate:Plant:ChilledWaterLoop, this creates the error. What was even stranger is that while in the example file it does not use temperature reset for its chilled water loop template object, it does fill in the temperature setpoint and outside air high and low fields. When I switch their reset from none to outdoorairtemperaturereset, it gets the same error controller error!

So my questions are:

1. Why doesn't the "outdoorairtemperaturereset" for the chilled water loop in the HHVACTemplate-5ZoneVAVWaterCooled.idf example file work?
2. Is it a problem the LEED reviewer will make me fix before proceeding (because all baseline models need to model chilled water outside air temperature reset).
3. Is the fix the same for my model? Here's a link to the .idf and error file.

Thanks for any help!

   ** Severe  ** FindRootSimpleController: Controller error for controller = "VAV SYS 1 COOLING COIL CONTROLLER"
   **   ~~~   **  Environment=New Orleans Lakefront Ap LA USA TMY3 WMO#=722315, at Simulation time=01/14 19:45 - 20:00
   **   ~~~   **   Controller function is inconsistent with user specified controller action = Reverse action
   **   ~~~   **   Actuator will be set to maximum action
   **   ~~~   ** Controller control type=Temperature
   **   ~~~   ** Controller temperature setpoint = 11.82 [C]
   **   ~~~   ** Controller sensed temperature = 12.17 [C]
   **   ~~~   ** Controller actuator mass flow rate set to 1.26 [kg/s]
   **   ~~~   ** Controller actuator temperature = 12.20 [C]
   **   ~~~   **   Note: Chilled water coils should be reverse action and the entering chilled
   **   ~~~   **         water temperature (controller actuator temperature) should be below the setpoint temperature
   **   ~~~   **   Note: Hot water coils should be normal action and the entering hot
   **   ~~~   **         water temperature (controller actuator temperature) should be above the setpoint temperature

I've been trying to tighten up my baseline model before submitting to LEED, and wanted to dig into a severe error that might raise some flags. The model is of a large k-12 school, and I'm using the HVACTemplate:System:VAV setup with a water-cooled chiller. I'm getting a controller error for the cooling coil that basically says the function is wrong (Reverse) and that the controller-sensed temperature is above the setpoint (see error language below).

Now the weird thing is, by comparing my file to the HVACTemplate-5ZoneVAVWaterCooled.idf example file, I was able to identify the input that causes the severe error. If you change the Chilled Water Setpoint Reset Type to outdoorairtemperaturereset in the HVACTemplate:Plant:ChilledWaterLoop, this creates the error. What was even stranger is that while in the example file it does not use temperature reset for its chilled water loop template object, it does fill in the temperature setpoint and outside air high and low fields. When I switch their reset from none to outdoorairtemperaturereset, it gets the same error controller error!

So my questions are:

1. Why doesn't the "outdoorairtemperaturereset" for the chilled water loop in the HHVACTemplate-5ZoneVAVWaterCooled.idf example file work?
2. Is it a problem the LEED reviewer will make me fix before proceeding (because all baseline models need to model chilled water outside air temperature reset).
3. Is the fix the same for my model? Here's a link to the .idf and error file.

Thanks for any help!

   ** Severe  ** FindRootSimpleController: Controller error for controller = "VAV SYS 1 COOLING COIL CONTROLLER"
   **   ~~~   **  Environment=New Orleans Lakefront Ap LA USA TMY3 WMO#=722315, at Simulation time=01/14 19:45 - 20:00
   **   ~~~   **   Controller function is inconsistent with user specified controller action = Reverse action
   **   ~~~   **   Actuator will be set to maximum action
   **   ~~~   ** Controller control type=Temperature
   **   ~~~   ** Controller temperature setpoint = 11.82 [C]
   **   ~~~   ** Controller sensed temperature = 12.17 [C]
   **   ~~~   ** Controller actuator mass flow rate set to 1.26 [kg/s]
   **   ~~~   ** Controller actuator temperature = 12.20 [C]
   **   ~~~   **   Note: Chilled water coils should be reverse action and the entering chilled
   **   ~~~   **         water temperature (controller actuator temperature) should be below the setpoint temperature
   **   ~~~   **   Note: Hot water coils should be normal action and the entering hot
   **   ~~~   **         water temperature (controller actuator temperature) should be above the setpoint temperature