heat-timer ETS Installation And Operation Manual page 47

Symptom
ETV Platinum Plus
Control Module does
not move the Floating
Motorized Valve.
Outlet temperature
fluctuates.
Output temperature
exceeds setpoint.
No alarm output.
No communication.
Heat‐Timer Corp.
Possible Cause
Valve wiring defective.
Valve modulating signal
incorrect.
Actuator manual override
engaged.
The ETV Platinum Plus requires
the use of a circulating loop with
a constantly running pump.
Improper piping.
No power to the alarm or
interface wiring disconnected.
Incorrect network settings.
Recommended Action(s)
Verify all wiring is in good condition and connected.
Verify voltage at the Actuator power terminals is
between 20–24Vac. Voltage levels outside this
range may cause the Actuator to not move or result
in damage to the Actuator.
Verify the ETV modulating signal is set to 0–10V to
match the Actuator's signal. Use a DC voltmeter to
read the modulation signal on terminals 13 and 15.
If the Modulation Output % was at 40% (see
"Default Display" on page 23), the signal should
read 4Vdc. If it did not, the ETV control is damaged.
Replace the ETV Platinum Plus.
Ensure the actuator is not in manual override.
Verify proper operation of the recirculation pump.
If the Valve Modulation is at 0% during the time the
outlet temperature exceeds the setpoint and does
not decrease, check for heat migration from the
water heating source through the COLD inlet piping
to the valve.
Verify the alarm is receiving power, all power and
interface wiring is in good condition and
connected.
The ETV does not provide power to alarms. Ensure
an external power source is used.
Ensure the network settings are correct. Refer to
the troubleshooting section of the applicable
network manual.
Troubleshooting 47
059326‐00 Rev D