Lutron Electronics Co., Inc.
7200 Suter Road, Coopersburg, PA 18036-1299 U.S.A.
)
Lutron, Lutron, myRoom, and Palladiom are trademarks or registered trademarks of Lutron Electronics Co., Inc. in the US
and/or other countries.
©2016–2019 Lutron Electronics Co., Inc.
Troubleshooting
If the thermostat displays “E” and a number, there is an issue with its functionality or configuration. Follow the table below for a possible solution.
Category
ID
Name
Description
Value
Default
Increment
Range
Primary
Configuration
01
Function Type
0 = Operate with thermostat; 1 = Operate without the thermostat *; 2 = Not Configured
0 = Operate with
thermostat
—
0–2
02
Temperature Sensor Type
0 = Remote return air sensor; 1 = Thermostat sensor. Set to 0 when Function Type = 1
(operate without thermostat).
1 = Thermostat
sensor
—
0–1
03
Deadband
Inactive range above and below the Setpoint.
1 °F (0.55 °C)
0.1 °F (0.055 °C)
0.1 °F–10.0 °F
(0.055 °C–5.5 °C)
04
ChangeOver Differential
Changeover temperature = Se Changeover diff Deadband. Used for
switching from Heating to Cooling.
3 °F (1.70 °C)
0.1 °F (0.055 °C)
0.1 °F–10.0 °F
(0.055 °C–5.5 °C)
Fan Control
05
Fan High Differential
Auto fan mode temperature difference in degrees to switch from medium to high fan speed.
1.5 °F (0.80 °C)
0.1 °F (0.055 °C)
0.1 °F–10.0 °F
(0.055 °C–5.5 °C)
06
Minimum Fan On-Time
Minimum fan on-time for auto mode (minutes).
2 minutes
1 minute
0–99 minutes
07
Overrun Cool Fan Time
Minutes the fan runs after cooling stops in Auto Mode.
0 minutes
0.1 minutes
0–99.9 minutes
08
Overrun Heat Fan Time
Minutes the fan runs after heating stops in Auto mode.
0.1 minutes
0.1 minutes
0–99.9 minutes
09
Kick-Start Fan
0 = OFF; 1 = Set fan to high speed for 1 second when turning on.
0 = OFF
—
0–1
10
Fan Circulation Mode
Defines when fan circulation will run. 0 = Disabled; 1 = Enabled, fan will run periodically to circulate
air; 2 = Use with return air sensor, fan will circulate air only when using a return air sensor.
2
—
0–2
13
Fan Circulation Off-Time
Maximum time for fan to stay off. If set to 0 and circulation is enabled, the fan will always run.
15 minutes
1 minute
0–99 minutes
14
Fan Circulation On-Time
Fan will turn on for fan on-time if the fan has stayed off for fan off-time.
5 minutes
1 minute
1–99 minutes
15
Fan Circulation Speed
Fan speed during fan circulation on-time. 1 = Low; 2 = Medium; 3 = High
1 = low
—
1–3
Operating Without the
Thermostat
Configuration
16
Temperature Setpoint when
operating without the thermostat Standalone setpoint (°F)
72 °F (22 °C)
1 °F (0.55 °C)
50 °F–90 °F
(10 °C–32 °C)
17
Deadband when operating
without the thermostat
Standalone deadband (°F)
2 °F (1.1 °C)
0.1 °F (0.055 °C)
0.1 °F–10.0 °F
(0.055 °C–5.5 °C)
18
Temperature Operation Mode
when operating without the
thermostat
0 = OFF; 1 = Heat only; 2 = Cool only; 3 = Auto
3 = Auto
—
0–3
19
Fan Mode when operating
without the thermostat
0 = OFF; 1 = Low; 2 = Medium; 3 = High; 4 = Auto
4 = Auto
—
0–4
20
Return Air Sensor Offset
Temperature offset for return air temperature sensor. This allows for compensation based on
the installation location of the probe.
0 °F (0 °C)
0.1 °F (0.055 °C)
–5.0 °F–5.0 °F
(–2.7 °C–2.7 °C)
Alarm Configuration
25
Freeze Protection (°F)
Freeze protection temperature for emergency heat
45 °F (7.2 °C)
1 °F (0.55 °C)
32 °F–50 °F
(0 °C–10 °C)
26
Setpoint Alarm Timeout
Cannot reach setpoint alarm time threshold
0.5 hours
0.5 hours
0.5–99.5 hours
27
Setpoint Alarm Action
0 = Alarm and keep trying; 1 = Alarm and enter failsafe
0 = Keep trying
—
0–1
28
Humidity Setpoint Alarm Timeout Length of continuous dehumidification before raising an alarm that the humidity setpoint has
not been achieved.
8 hours
0.5 hours
0.5–99.5 hours
Dehumidification
Configuration
33
Enable Dehumidification
†
0 = Disabled; 1 = Enabled
0 = Disabled
—
0–1
34
Dehumidification Mode
1 = Over-cool only; 2 = Over-cool with heating (for 4-pipe). Dehumidification must be enabled
to run.
1 = Over-cool only
—
1–2
35
Humidity Deadband
Inactive range around the humidity setpoint.
10% RH
1% RH
5–20%
36
Overcool Offset Temperature
Degrees below the setpoint deadband to continue cooling for dehumidification if humidity
setpoint has not been reached.
2 °F (1.1 °C)
0.1 °F (0.055 °C)
0.1 °F–5.0 °F
(0.055 °C–2.7 °C)
37
Dehumidification Setpoint
Relative humidity (RH) setpoint by dehumidification only.
50% RH
1% RH
0–100%
2-pipe Configuration
(only applies for a 2-pipe
system)
40
ChangeOver to Heat for Pipe
Temperature
Pipe temperature that designates heating mode when using a 2-pipe system with a
changeover sensor on the pipe.
82 °F (27.8 °C)
1 °F (0.55 °C)
75 °F–99 °F
(23.8 °C–37.2 °C)
41
ChangeOver to Cool for Pipe
Temperature
Pipe temperature that designates cooling mode when using a 2-pipe system with a
changeover sensor on the pipe.
60 °F (15.5 °C)
1 °F (0.55 °C)
32 °F–70 °F
(0 °C–21.1 °C)
42
Enable Purge Function
Turns the valve on periodically if left dormant to refresh pipe temperature;
0 = Disabled; 1 = Enabled
1 = Enabled
—
0–1
43
Purge Valve On-Time
Number of minutes to leave the valve on during a purge; 0 = Disabled
2 minutes
1 minute
0–60 minutes
44
Purge Valve Off-Time
Number of hours to leave the valve off between purges; 0 = Disabled
2 hours
0.5 hours
0.5–99.5 hours
0–10 V
-
Configuration
(only available in
SMC55x)
50
Proportional Fan Minimum
The lowest percent output to apply for fan speed. This determines the low end-point of the
fan being on. If at any time the fan output is 0% (off), the valves will also close at 0%.
10%
1%
0–100%
51
Proportional Fan Low Speed
The output to apply when the manual fan-speed is set to Low.
20%
1%
0–100%
52
Proportional Fan Medium Speed The % output to apply when the manual fan-speed is set to medium.
60%
1%
0–100%
53
Proportional Fan High Speed
The % output to apply when the manual fan-speed is set to high. This is also the fan
maximum in auto mode.
100%
1%
0–100%
54
Minimum Valve Percent Open
The lowest % output to apply for the valve opening. This determines the low end-point of the
straight-line curve for the valve opening.
10%
1%
0–100%
55
Valve Fully Open Differential
The temperature offset from deadband at which the valve is fully open (100% opening).
1 °F (0.55 °C)
0.1 °F (0.055 °C)
0.1 °F–10.0 °F
(0.055 °C–5.5 °C)
Floating Point 3-Position
Valve Control*
60
Enable Floating Point
0 = Disabled; 1 = Enabled (overrides basic valve configuration).
0 = Disabled
—
0–1
61
Actuator Running Time
Actuator running time for floating point control.
150 seconds
1 second
1–999 seconds
Contact Closure Input
(CCI) Support
‡
64
CCI Type
0 = Disabled; 1 = Normally Open; 2 = Normally Closed
0 = Disabled
—
0–2
65
CCI Open Delay
Seconds the window contact sensor needs to be open before HVAC is disabled.
10 seconds
1 second
1–999 seconds
66
CCI Closed Delay
Seconds the window contact sensor needs to be closed before HVAC is enabled.
1 second
1 second
1–999 seconds
67
Open CCI Fan Mode
Fan mode setting when CCI is open. 0 = Off; 1 = Low; 2 = Medium; 3 = High; 4 = Auto;
5 = Unaffected
0 = Off
—
0–5
Advanced Configuration Parameter Table
*
For floating point control, see Application Note #630 (P/N 048630) at www.lutron.com. Basic Configuration set for the valve type is overridden when selecting Floating Point.
†
Dehumidification supported in future versions.
‡
Available only in myRoom Prime systems with thermostat version 4.12 or later. Contact Lutron Customer Assistance before using this feature.
C. Advanced Configuration Parameters (optional)
Review the Advanced Configuration Parameters Table below. If any values need to be changed, enter Advanced Configuration Mode
using the steps below.
1.
Enter Advanced Configuration Mode:
1a.
If the thermostat has been powered for over 15 minutes, cycle power to the thermostat. Your previously saved settings are
stored during power cycles.
1b.
Hold the °C | °F and buttons for 3 seconds. Once the display begins to flash, release both buttons and hold only the button
for 3 seconds.
1c.
The thermostat will enter the Advanced Configuration Mode’s Parameter Menu (
1 2 3
), with “P”, “Set”, and 2 circles filled on
the display.
2.
Select a Parameter to Modify:
2a.
Tap the
}
or
{
buttons to change parameter identification number.
2b.
Tap the
u
button to select the parameter.
2c.
The thermostat will enter the Parameter Value Selection Menu (
1 2 3
), with 3 circles filled on the display.
3.
Set or View a Parameter Value:
3a.
While in the Parameter Value Selection Menu (
1 2 3
), tap the
}
or
{
buttons to change the desired value for the parameter.
3b.
Once the correct value is displayed, tap the
u
button to set this value. The
Set
segment will show and the display will return to
the Parameter Menu
1 2 3
.
3c.
If you do not want to set a new value, tap the button to return to the Parameter Menu.
3d.
Follow the steps above to set all the parameters required for your system.
3e.
When finished, hold the
u
button for 3 seconds. The display will flash and return to normal operation.
Tap
to view
parameter value.
Hold 3 seconds
to
save and exit
configuration mode
Diagram 1: Parameter Menu
Increase
Decrease
Hold °C | °F and for 3 seconds,
then for 3 seconds to enter mode.
Advanced Configuration Mode
Parameter Menu
Set
T p
to view
parameter value
Hold 3 seconds
to save and exit
C F
LUTRON
Hold °C | °F and for 3 seconds, then for 2 seconds to enter mode.
1 2 3
Return to Parameter Menu
without setting
Tap
to set and return
to Parameter Menu,
Hold 3 seconds
to
save and exit
configuration mode
Diagram 2: Parameter Value Selection
Increase
Decrease
Advanced Configuration Mode
Parameter Value Selection
Tap
to set and
return to
Parameter Menu,
Hold 3 seconds
to
save and exit
mode
Increment
C F
Decrement
Return to
Parameter Menu
without setting
LUTRON
1 2 3
Symptom
Possible Cause
Solution
Display is blank
The thermostat does not have power.
Check the wiring to confirm that Common (Black) and V+ (Red) wires are connected to a 24–36 V
-
power supply.
E0 shown on the display
The thermostat temperature sensor is not functioning properly.
Contact Customer Assistance.
E1 shown on the display
Wiring issue between the thermostat and the FCU controller or controller not powered.
Ensure that the FCU controller communication link is wired correctly and isolated from all other connections and
that the controller is powered. If using a 3
rd
party controller verify that it is wired correctly to the HVAC unit.
The incorrect HVAC controller or modbus address was selected.
Enter into HVAC controller selection mode and select the correct HVAC controller and modbus address.
E2 shown on the display
Remote temperature sensor is malfunctioning or misconfigured.
Check the wiring between the sensor and the FCU controller and confirm configuration.
E3 shown on the display
Changeover sensor malfunctioning or misconfigured (applicable only for 2-pipe systems). Check the wiring between the sensor and the FCU controller and confirm configuration.
E4 shown on the display
QS link wiring issue or no temperature has been provided by the processor.
Contact Customer Assistance.
E5 shown on the display
Incorrect FCU controller or thermostat model.
Ensure that a myRoom thermostat is connected to a myRoom FCU controller.
System is not heating / cooling as expected The FCU controller or HVAC equipment may not have power.
Ensure that the FCU controller and HVAC equipment are powered and properly wired. Consult an HVAC
professional if the issue persists.
