Troubleshoot - heat-timer DiGi-SPAN Elite Series Installation And Operation Instruction Manual

Troubleshoot

No Display or LED Lights
Check the power to the RSM. The RSM-Elite requires 120VAC power to the Black wires or
24VAC to the right most terminals. Turn the power off and back on to restore the display. If
unsuccessful, make sure the Display Cover of the control is securely mounted to the Base.
System or Outdoor Reads OPEN or SHORT
If Open, short the sensor input terminals. The display should read Short. If it does, check the
sensor wiring. If it doesn't, the RSM-Elite may be damaged.
If Short, remove the wires from the input terminals. The display should read Open. If it does,
check the sensor wiring. If it doesn't, the RSM-Elite may be damaged.
System or Outdoor Reads an Incorrect Temperature
Remove the wires from the input terminals. The display should change to read Open. If it
doesn't, the RSM-Elite may be damaged. Otherwise, take an ohm reading across the detached
sensor wires. The ohm reading should correspond to the Temperature Sensor Chart. If the
difference is within 5°F adjust the Trim of the sensor. Otherwise, the sensor may be damaged.
No Heat - All LEDs are OFF
• O utdoor Cutoff - Check the outdoor temperature and Outdoor Cutoff readings. If the outdoor
temperature is above the Outdoor Cutoff, the RSM-Elite will not give heat. The display will
shoe OUTDOOR CUTOFF. See Outdoor Cutoff on page 6.
• T stat Open - If the display shows
EXT± terminals are not jumped together, the RSM-Elite will not give heat. See Enable/
Disable Input on page 8
• V alve Manually Closed - Finally, if the display shows
Mode has been set to Close. Change Valve mode to Auto. See Valve on page 8.
No Heat - System Pump LED ON - Pump Not Running
Remove any connections to the Yellow wires for the Heating System Pump. Test for continuity
across the pair of Yellow wires. If the meter registers continuity, the RSM-Elite is calling for the
Slab Pump to run and the problem is not with the RSM. Check the pump power source. Note
that the RSM does not source power to the outputs. See Pump Wiring on page 3.
RSM-Elite Does Not Move the Floating Motorized Valve
• First check the valve wiring - The RSM-Elite does not source power to the actuator.
Instead, a separate power source must be wired to the actuator as shown on page 3 for the
floating output.
• Check relay operation - Remove any wires connected the actuator. Set the Valve mode to
Close and check for continuity across the Red and Blue and across Red and White wires. The
meter should register continuity across the Red and Blue and should register no continuity
across the Red and White. Otherwise, the RSM-Elite may be damaged. Then, set the Valve
mode to Open and check for continuity across the Red and Blue and across Red and White
wires.. The meter should register no continuity across the Red and Blue and should register
continuity across the Red and White. Otherwise, the RSM-Elite may be damaged.
• Valve Manually Closed - Finally, if the display shows
mode has been set to Close. Change Valve mode to Auto. See Valve on page 8.
Snow Does not Melt or Slush is on the ground
• Start Slab Melting 24 Hour Early - If the slab heating system has not been active for at least
24 hours, the slab temperature may not be warm enough to melt the snow. It is recommended
to activate the heat to the slab at Least 24 hours before the snow.
• Adjust the Curve - If the snow accumulation occurs in colder temperature, then increase the
Curve setting. See Curve on page 5.
• O utdoor Cutoff - Check the outdoor temperature and Outdoor Cutoff readings. If the
Outdoor Cutoff is set too low, the RSM-Elite will not give heat. Increase the Outdoor Cutoff
above the current outdoor temperature. See Outdoor cutoff on page 6.
TSTAT OPEN
then, check the EXT± terminals. If the
MANUAL CLOSE
MANUAL CLOSE
10
then, the Valve
then, the Valve
Temperature Sensor Chart
TEMPERATURE Value
(in Degrees °F) (in Ohms)
-30 117720
-20 82823
-10 59076
0 42683
10 31215
20 23089
25 19939
30 17264
35 14985
40 13040
45 11374
50 9944
55 8714
60 7653
70 5941
80 4649
90 3667
100 2914
110 2332
120 1879
130 1524
140 1243
150 1021
160 842
170 699
180 583
190 489
200 412
210 349
220 297
230 253
240 217
250 187