Thermo Scientific Revco ULT1790-10-A Operating Manual page 33

Error High End Message Notes
Er00 "INV. MODEL"
ErA1 " NO FREQUENCY"
ErC1 "FREQ <50Hz"
Erd1 "FREQ >60Hz"
ErE1 "VAC < 180V"
ErF1 "VAC > 260V"
Erg1 "VAC < 85V"
ErH1 "VAC > 160V"
Thermo Scientific
Name: Improper model selected.
Description: Indicates that DIP SW3 has not selected a proper model or can't be accessed properly.
Response: Display shows "Er00" and will not start-up until a proper model is selected. Contact Technical
Services.
This error condition will prevent peripherals (fans, compressors, etc.) from powering up with the incorrect
voltage.
Name: Voltage/Frequency failure
Description: Indicates the measured RMS line voltage did not agree with the logic level sensed by the
micros provided by the installed high voltage PCB; or the measured RMS voltage is not within a tolerable
range (<180VAC < 270 for 230VAC unit / <85 VAC < 160 for 115VAC unit); or the frequency measured over 10
cycles was not within a tolerable range (55 Hz < Freq < 70 Hz for 60 Hz units / 40 Hz < Freq < 55 Hz for 50 Hz
units)
Response: This condition is checked at power on reset and if it is active the unit will NOT power up. The
unit will indefinitely display "Er_1" in the display and continue to monitor the frequency and voltage.
Furthermore, the audible alarm will sound. Other startup error messages may be displayed prior to this mes-
sage; however, the system will stop the startup sequence for this condition.
ErA1 .. No pulses (zero crossings) detected to determine frequency (50 / 60 Hz)
ErC1 .. Frequency detected is below 50 Hz
Erd1 .. Frequency detected is above 60 Hz (Possible noise spikes on supply voltage)
ErE1 .. Unit is 230V and the voltage detected is below the low limit (180VRMS)
ErF1 .. Unit is 230V and the voltage detected is above the high limit (260VRMS)
Erg1 .. Unit is 115V and the voltage detected is below the low limit (85VRMS)
ErH1 .. Unit is 115V and the voltage detected is above the high limit (160VRMS)
Section 4
Alarms
Revco CxF 4-3