Taco Comfort Solutions 1900e Series, Instruction Sheet

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Analog Control Curve
RUN
Voltage
MAX.
Voltage
Function
> 1 V < 3 V
Pump at
minimum speed.
= 0 V < 2 V
Pump is at
1/2 speed.
> 3 V 3 to 10 V
Speed is proportional
to voltage regulation.
22 - Fault Finding & Error Codes
The pump Status LED will flash red during errors and overload conditions. The sequence
of the flash is determined by the type of the error per the following table.
Number of blinks Error Description Probable Cause(s) Pump Response
1 Blink Locked Rotor Motor Restarts 10 times then shut down/off
2 Blinks Over Current Motor Shut down/off
3 Blinks Over Temperature Motor Shut down/off
Orange Blinking Temperature Error Motor Reduce speed
4 Blinks Over Voltage Motor Shut down/off
5 Blinks Under Voltage Motor Shut down/off
6 Blinks COMM Fault Error (TX/RX) UI or Motor Run at Constant Speed 1
7 Blinks Safety Routine Error Motor Shut down/off
8 Blinks Staging Fault UI Shut down/off
9 Blinks Dry Run Fault Motor Shut down/off
10 Blinks PFC IAC Error Motor Shut down/off
10 Blinks Dry Run Fault (Alternate error below 120 VAC) Motor Shut down/off
11 Blinks PFC IAVG Error Motor Shut down/off
12 Blinks BUS Voltage Error Motor Shut down/off
Error Codes for 1911ecm •
(Blinks in 1/2 second intervals for a period 15 sec)
0-10v Analog Control