059305–00 REV. E
HEAT-TIMER CORP.
|
57
SYMPTOM POSSIBLE CAUSE RECOMMENDED ACTION(S)
ETV Control Module
Control Module does
not move the Floating
Motorized Valve.
Valve wiring defective. 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.
Valve modulating
signal incorrect.
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 40), the signal should read 4Vdc. If it did not, the
ETV control is damaged. Replace the ETV Platinum Plus
Actuator manual
override engaged.
Ensure the actuator is not in manual override.
Outlet temperature
fluctuates.
The ETV Platinum Plus
requires the use of a
circulation and constantly
running pump.
Verify proper operation of the pump. Check and ensure
the tip of the System Sensor is in the flow stream. Check
and ensure the system sensor is within the recommended
1 to 3 feet distance from the outlet of the ETV valve.
Output temperature
exceeds setpoint.
Improper piping. 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.
No alarm output. No power to the
alarm or interface
wiring disconnected.
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.
See “Wiring the HTLV Lockout” on page 28.
No communication. Incorrect network settings. Ensure the network settings are correct. Refer to the
troubleshooting section of the applicable network manual.
07 TROUBLESHOOTING
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