56
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HEAT-TIMER CORP.
059305–00 REV. E
07 TROUBLESHOOTING
SYMPTOM POSSIBLE CAUSE RECOMMENDED ACTION(S)
No display or
distorted display.
No power to the
ETV Platinum
Verify the ETV Control Module Control Module is
receiving power, all power wiring is in good condition
and connected.
The ETV Control Module Control Module requires
120Vac power to terminal 1 and 2, and earth ground
wiring to terminal 3.
Turn power to the ETV Control Module Control Module
off then back on.
Display shows
sensor “Open”.
Sensor disconnected. Verify the sensor is properly connected to the ETV
Platinum Plus Control Module.
Defective sensor, wires,
or ETV Platinum Plus
Control Module.
Short the sensor input wires. The display should
read “Short”.
• If the display still reads “Open”, the device is
defective. Replace the ETV Platinum Plus
Control Module.
• If the display reads “Short”, test the sensor wiring
for continuity. Replace the sensor/wiring.
Display shows
sensor “Short”.
Defective sensor, wires,
or ETV Platinum Plus
Control Module.
Remove the sensor wires from the input terminals. The
display should read “Open”.
• If the display still reads “Short”, the device
is defective. Replace the ETV Platinum Plus
Control Module.
• If the display reads “Open”, test the sensor wiring
for continuity. Replace the sensor/wiring.
System reads
incorrect temperature.
Probe sensor not
properly installed.
Ensure the probe sensor is properly installed in the flow of
the water stream.
See “Sensor Probe Locations” on page 14.
Defective sensor or
ETV Platinum Plus
Control Module.
Disconnect the wires from the input terminals. The display
should read “Open”.
• If the display does not read “Open”, the device
is defective. Replace the ETV Platinum Plus
Control Module.
• If the control reads “Open”, and the difference is
within 5°F, replace the sensor.
No hot water. If Flow Switch is set to “Yes”
and the flow input is open,
the mixing valve may be
marginally closed.
Verify Flow Switch setting and the position of the
mixing valve.
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