Error/Alarms And Troubleshooting - nVent RAYCHEM HWAT-ECO-GF Mode D'emploi

6.2. Error/Alarms and Troubleshooting

Error Warning
No. message
E:1 CHECK BOILER
E:2.1 BOILER SENSOR
OPEN
E:2.2 BOILER SENSOR
SHORT
E:2.3 PIPE SENSOR
OPEN
E:2.4 PIPE SENSOR
SHORT
E:3.1 PIPE TEMP HIGH
E:3.2 BOILER TEMP
HIGH
E:4.1 BOILER TEMP
LOW
E:4.2 PIPE TEMP LOW
E:5 HEATING CABLE
DISCONNECT
E:6.x INTERNAL ERROR
E:7 GROUND FAULT
E:8 PLAUSIBILITY
CHECK
E:9 Time and
ANNUAL TIME
VERIFICATION
Possible causes
Hotwater storage
temperature decreases
by 5K vs. maintain
temperature
Sensor not
connected or broken
Sensor short
Sensor not
connected or broken
Sensor short
Water pipe
temperature
too high
if Temperature sensor
is higher than the
maximum exposure
temperature of the
HWAT cable: HWAT-R2
(185°F/ 85°C) Water
heater sensor failure
Sensor has not been
installed Sensor or
sensor cable defect
(only when water heater
sensor "On" is selected)
Water heater
temperature too high if
Temperature sensor
is higher than the
maximum exposure
temperature of the
HWAT cable: HWAT-R2
(185°F/85°C)
Water heater
temperature is lower
than maintain
temperature set point
of the HWAT-ECO-GF
Water heater
temperature is lower
than maintain
temperature set point
of the HWAT-ECO-GF
Low or no current alarm
No current measured
when the circuit should
be on.
Internal Error
There is a leakage of
current to ground
No power supplied
during prolonged period
of time (~30 days).
Clock reset to default
"0.00.0000 00:00"
displays
Corrective actions
Connect sensor to HWAT-
ECO-GF or set
program water
heater sensor to OFF.
Check sensor
connections.
Replace sensor.
See E.1.
See E.1.
See E.1.
See E.1.
Check Sensor and Boiler
temperature
Check Sensor and Boiler
temperature
Check water heater
temperature (also indicated
in INFO of HWAT-ECO-GF
menu). Check maintain
temperature setting at
HWAT-ECO-GF. Check
temperature sensor
mounting
Check water heater
temperature (also indicated
in INFO of HWAT-ECO-GF
menu). Check maintain
temperature setting at
HWAT-ECO-GF. Check
temperature sensor
mounting
Confirm that heating
cable is connected to the
controller.
Disconnect HWAT-ECO-GF
controller and replace unit.
Reset the GFCI
If GFCI is tripping, check
heating cable
Check parameter settings
Set date and time.
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