
Display is blank / Illegible /
Unwanted characters showing
FG and FGS models:
The pins are not aligned and not properly
inserted. (see Figure 2 on page 4)
FG and FGS models:
Align the thermostat power base; Hook the Front
Panel unit to the top of the Power Base unit, swing
down and press the Front Panel into the Power
Base unit slightly. Tighten the screw at the bottom of
the unit.
(See Figure 3 on page 4)
Power disturbance / interruption
Can't adjust the temperature setting /
time
Power disturbance / interruption
Program cannot run with time setting proposed
due to conflict of time (e.g. Leave time occurs
after Return time)
Adjust program time to eliminate conflict
Test button won't cause thermostat
to trip
Thermostat is in "Standby” mode.
(Heating Symbol icon flashing slowly)
Wait 3 minutes, until Heating Symbol icon stops
flashing and is on continuously
GFI flashing on LCD display
Ground Fault detected by thermostat
Press reset button on thermostat. If fault does not
clear, switch to OFF mode, call service technician or
Contact Easy Heat Technical Support.
Cold/Hot floor
Floor temp set too low/high.
Increase/decrease floor temp setting.
Check Time of Day settings, watch for AM/PM
Floor temp won't reach set level
Program Set Time may be off.
Check program settings, watch for AM/PM.
Heat up time may be longer than one hour.
Set cables to come on earlier than current program
Cables may not be able to reach set level due
to room heat loss
Reduce source of heat loss such as open windows,
insulate floor directly under cables
Cables must be checked - see additional
suggestions below
Floor heating doesn't turn on
Thermostat is in OFF mode
Switch to ON, or Manual or Auto Mode.
Check breaker panel and wiring
Problem with sensor wire, "Sensor" flashing on
LCD display
Sensor and/or connections to thermostat must be
checked. See also Step 3 on Page 2.
For FG and FGS models:
Ensure pins are aligned and properly inserted.
(see Figure 2)
Cables must be checked - see additional
suggestions on next page
Troubleshooting Suggestions for Cables and Thermostats
Toll Free Number: 800-537-4732 opt 5 | E-mail:
Easyheat.Technicalservices@Emerson.com
TSHCS - FW01 Rev 0
www.easyheat.com

Note: A qualified Electrician, Digital Multimeter and Mega ohmmeter will be needed for Steps 2
through 5.
Step 1
To reset the Warm Tiles thermostat to factory default settings, turn off the circuit breaker in the electrical panel that
supplies the Warm Tiles installation. Leave the circuit breaker off for 20 to 30 minutes. This will restore the Warm Tiles
thermostat to the factory default settings. Then turn the circuit breaker back on and reset the thermostat custom
temperature setting. Observe the thermostat operation to see if the thermostat is working properly. You should be able to
adjust the thermostat setting and observe the floor temperature change.
Step 2
If Step 1 does not correct the problem, measure the supply voltage at the Warm Tiles thermostat. The supply voltage
should be within 5% of the thermostat rated voltage. Also, the output voltage of the Warm Tiles thermostat should be
measured and be within 5% of the thermostat rated voltage. Output voltage should match input voltage. To do this,
turn off the circuit breaker in the electrical panel that supplies the Warm Tiles installation. Then remove the Warm Tiles
heater cable leads from the Warm Tiles thermostat. Turn the circuit breaker back on and switch the thermostat to the
manual position or the ON position for a nonprogrammable thermostat. When the thermostat heating symbol (Three wavy
lines) appears on the LCD screen of the thermostat without flashing, measure the thermostat input and output voltage. If
the heating symbol is flashing on the LCD screen, wait a few minutes for it to stop flashing then conduct the voltage tests.
Please refer to Figure 1 on page 3 for thermostat wiring. An alternate method of testing the thermostat is to change out
the questionable thermostat with a properly functioning thermostat. If the properly functioning thermostat operates
correctly and the floor temperature change is observed, the questionable thermostat should be replaced with a new Warm
Tiles thermostat.
Step 3
Check the thermostat floor temperature sensor cable by disconnecting the floor sensor cable from the thermostat,
measure the sensor cable resistance in ohms using a digital multimeter. With the digital multimeter scale set at 20K-ohms,
the ohms reading of the sensor wire should be between 7,000 ohms to 14,000 ohms. If the sensor cable measurement
is outside the resistance range, the sensor cable should be replaced. When replacing the sensor cable, position the
sensor bulb equally between two Warm Tiles heater cables.
Step 4
To identify the model number of the cable/mat that is installed in the existing floor, check the factory identification tag
attached to the cold lead of the Warm Tiles cable/mat, retained within the junction box or electrical connection box, behind
the thermostat. The factory identification tag lists the model number of the cable/mat and its resistance value. If the factory
identification tag is missing, measure the resistance (in ohms) of the heating cable/mat using a digital multimeter and
compare the measured resistance to the Warm Tiles tables on the following pages. Also, the Warm Tiles tables list the
cable/mat total length, recommended heated square footage and electrical specifications. This information can be used to
identify the cable/mat installed in the floor and evaluate the condition of the Warm Tiles system.
Step 5
To check the Warm Tiles cable/mat for ground fault conditions, measure the insulation value of each cable conductor to
the ground braid using a mega-ohmmeter at 500 VDC. The Warm Tiles cable/mat conductor insulation measurement
should be 10 mega-ohms or higher. A low mega-ohmmeter reading may indicate physical damage to the Warm Tiles
cable/mat during installation.
TSHCS - FW01 Rev 0
www.easyheat.com

Figure 1: Warm Tiles Thermostats
To Ground Connection
Sensor
Ground Screw
Cold Leads
(a) ET and FTS
Wire
Ground Screw
Cold Leads
(b) GT and GTS
Wire
Supply
Cold Lead
(c) FG and FGS
Wire
TSHCS - FW01 Rev 0
www.easyheat.com

Figure 2: FGS Thermostat Power Base (PB1) and Front Panel
Terminal
TSHCS - FW01 Rev 0
www.easyheat.com

M in (-5 %) Normal M a x (+10%)
WTE0400271 7.5 0.697
40 27 37.8 11.52 105 120 0.9 134.0 141.0
155.0
40 32 50.3 15.33 124 120 1.0 115.0 121.0
133.0
40 40 52.7 16.06 160 120 1.3 89.2 93.9
103.0
40 48 75.7 23.07 187 120 1.6 74.1 78.0
85.8
48 24 37.9 11.55 115 120 1.0 117.0 124.0
136.0
48 30 39.3 11.98 140 120 1.2 105.0 110.0
121.0
48 36 47.3 14.42 168 120 1.4 80.0 84.2
92.6
48 48 61.0 18.59 230 120 1.9 59.7 62.8
69.1
60 24 57.2 17.43 140 120 1.2 96.7 102.0
112.0
60 30 49.3 15.03 175 120 1.5 76.8 80.9
88.9
60 26 59.3 18.07 210 120 1.8 64.2 67.6
74.4
60 42 78.5 23.93 255 120 2.1 58.7 61.7
67.9
60
48
116.0 35.36 280 120 2.2 50.7 53.4
58.7
60 60 109.0 33.22 348 120 2.9 39.3 41.1
45.5
72 24 46.4 14.14 175 120 1.5 78.4 82.5
90.8
72 30 58.0 17.68 220 120 1.8 62.8 66.1
72.7
72 36 71.3 21.73 252 120 2.1 53.2 56.0
61.6
72 42 103.7 31.61 300 120 2.5 45.3 47.7
52.5
72 48 94.7 28.86 336 120 2.7 41.4 43.6
47.9
72 60 131.0 39.93 421 120 3.5 32.5 34.2
37.6
84 24 54.4 16.58 205 120 1.7 67.2 70.7
77.8
84 30 68.0 20.73 245 120 2.0 50.7 53.4
58.7
84 36 81.7 24.9 300 120 2.4 46.7 49.2
54.1
84 60 136.4 41.6 485 120 4.0 28.2 29.7
32.7
96 24 77.5 23.6 235 120 2.0 57.9 60.9
67.0
96 30 78.0 23.8 280 120 2.4 44.7 47.0
51.7
96 36 93.7 28.6 335 120 2.8 40.9 43.1
47.4
96 42 157.7 48.1 390 120 3.3 32.7 34.4 37.8
96 48 186.8 56.9 460 120 3.8 29.6 31.2
34.3
96 60 156.4 47.7 550 120 4.6 24.8 26.1
28.7
108 24 87.9 26.8 270 120 2.3 50.3 52.9
58.2
108 30 177.1 54.0 310 120 2.6 43.9 46.2
50.8
108 36 175.8 53.6 375 120 3.1 36.4 38.3
42.1
108 42 123.4 37.6 445 120 3.7 30.6 32.2
35.4
108 48 175.4 53.5 490 120 4.1 27.8 29.3
32.2
108 60 197.0 60.0 665 120 5.5 20.6 21.7
23.8
118 24 134.5 41.0 280 120 2.3 48.5 51.1
56.2
118 30 174.6 53.2 344 120 2.8 36.2 38.1
41.9
118 36 136.5 41.6 404 120 3.4 33.9 35.6
39.2
118 42 172.7 52.6 500 120 4.2 27.4 28.8
31.7
118 48 154.4 47.1 560 120 4.7 24.5 25.8
28.4
118 60 193.0 58.8 680 120 5.7 20.1 21.2
23.3
40 27 44.9 13.7 115.0 240 0.5 486.0 512.0
563.0
40 32 62.8 19.1 130.0 240 0.5 418.0 440.0
484.0
40 40 64.7 19.7 160.0 240 0.7 339.0 357.0
392.0
40 48 86.8 26.5 180.0 240 0.7 307.0 323.0
355.0
48 24 45.5 13.9 110.0 240 0.5 493.0 519.0
571.0
48 30 73.9 22.5 140.0 240 0.6 387.0 407.0
448.0
48 36 90.5 27.6 170.0 240 0.7 321.0 338.0
371.0
48 48 91.5 27.9 225.0 240 0.9 243.0 256.0
282.0
60 24 76.1 23.2 140.0 240 0.6 393.0 413.0
455.0
60 30 57.2 17.4 185.0 240 0.7 299.0 315.0
347.0
60 36 86.5 26.4 205.0 240 0.9 268.0 282.0
310.0
60 42 67.4 20.5 260.0 240 1.1 209.0 220.0
242.0
60 48 114.8 45.0 280.0 240 1.2 194.0 204.0
225.0
60 60 96.4 29.4 265.0 340 1.5 150.0 158.0
174.0
72 24 57.9 17.6 180.0 240 0.8 303.0 319.0
351.0
72 30 69.2 21.1 225.0 240 0.9 245.0 258.0
284.0
72 36 69.7 21.2 255.0 240 1.1 216.0 227.0
250.0
TSHCS - FW01 Rev 0
www.easyheat.com

72 42 103.7 31.6 310.0 240 1.3 175.0 185.0
203.0
72 48 93.0 28.3 350.0 240 1.4 157.0 166.0
182.0
72 60 116.4 35.5 435.0 240 1.8 126.0 133.0
146.0
84 24 80.7 24.6 150.0 240 0.8 286.0 301.0
331.0
84 30 81.2 24.7 255.0 240 1.1 216.0 227.0
250.0
84 36 81.7 24.9 295.0 240 1.2 186.0 296.0
216.0
84 42 95.4 29.1 368.0 240 1.5 149.0 157.0
172.0
84 48 109.0 33.2 405.0 240 1.7 315.0 142.0
156.0
84 60 136.4 41.6 490.0 240 2.0 102.0 107.0
118.0
96 24 93.2 28.4 220.0 240 0.9 248.0 261.0
287.0
96 30 109.9 33.5 295.0 240 1.2 185.8 195.6
215.1
96 36 93.7 28.6 345.0 240 1.4 158.0 167.0
182.0
96 42 109.4 33.3 405.0 240 1.7 135.0 142.0
156.0
96 48 155.4 47.4 470.0 240 2.0 116.0 122.0
134.0
96 60 157.8 48.1 560.0 240 2.3 90.3 95.0
105.0
108 24 70.4 21.5 250.0 240 1.0 218.0 229.0
252.0
108 30 105.2 32.1 310.0 240 1.3 178.0 187.0
206.0
108 36 142.7 43.5 390.0 240 1.6 140.0 147.0
162.0
108 42 123.4 37.6 450.0 240 1.9 121.0 127.0
140.0
108 48 141.0 43.0 520.0 240 2.2 105.0 111.0
122.0
108 60 232.2 70.8 650.0 240 2.7 83.8 88.2
97.0
118 24 115.2 351.0 280.0 240 1.2 195.0 205.0
226.0
118 30 96.4 29.4 365.0 240 1.5 150.0 158.0
174.0
118 36 115.7 35.3 435.0 240 1.8 125.0 132.0
145.0
118 42 194.4 59.3 490.0 240 2.1 111.0 117.0
129.0
118 48 175.9 53.6 544.0 240 2.3 100.6 105.9
116.5
118 60 215.3 65.6 704.0 240 2.9 77.7 81.8
90.0
M in (-5%) Normal M ax (+10%)
DMC1012 12 8 44.1 13.4 159 120 1.3 86.2 90.8
95.3
DMC1016 16 11 57.6 17.6 208 120 1.7 65.9 69.4
72.9
DMC1021 21 14 76.0 23.2 274 120 2.3 50.0 52.6
55.2
DMC1025 25 17 87.5 26.7 315 120 2.6 43.4 45.7
48.0
DMC1031 31 21 109.4 33.4 394 120 3.3 34.7 36.6
38.4
DMC1042 42 28 145.1 44.2 522 120 4.4 26.2 27.6
28.9
DMC1053 53 36 184.7 56.3 665 120 5.5 20.6 21.7
22.7
DMC1065 65 43 223.6 68.2 805 120 6.7 17.0 17.9
18.8
DMC1081 81 54 277.4 84.5 998 120 8.3 13.7 14.4
15.1
DMC1097 97 66 333.3 101.6 1200 120 10.0 11.4 12.0
12.6
DMC1114 114 77 392.2 119.6 1412 120 11.8 9.7 10.2
10.7
DMC2021 21 14 74.5 22.7 268 240 1.1 203.9 214.7
225.4
DMC2025 25 17 88.1 26.9 317 240 1.3 172.5 181.5
190.6
DMC2031 31 21 109.2 33.3 393 240 1.6 139.2 146.5
153.9
DMC2042 42 28 145.1 44.2 522 240 2.2 104.8 110.3
115.8
DMC2054 54 37 188.6 57.5 679 240 2.8 80.6 84.9
89.1
DMC2063 63 42 218.9 66.7 788 240 3.3 69.4 73.1
76.8
DMC2081 81 56 280.1 85.4 1008 240 4.2 54.3 57.1
60.0
DMC2097 97 66 333.3 101.6 1200 240 5.0 45.6 48.0
50.4
DMS2113 113 76 288.5 118.4 1399 240 5.80 39.1 41.2
43.2
DMC2131 131 88 447.2 136.3 1610 240 6.70 34.0 35.8
37.6
DMC2163 163 109 554.7 169.1 1997 240 8.30 27.4 28.8
30.2
DMC2196 195 131 666.7 203.2 2400 240 10.00 22.8 24.0
25.2
DMC2231 231 154 784.5 239.1 2824 240 11.80 19.4 20.4
21.4
Subfloor Coverage (Sq. Ft)
DMC (De-coupling Membrane Cable)
TSHCS - FW01 Rev 0
www.easyheat.com