VOLTMAX ELECTRIC BOILER Installation and Operation Manual
(
Revised March 2019)
, Page
55.
TROUBLESHOOTING
The troubleshooting section shows the various
error messages that can occur during abnormal
operation of the boiler. It is possible to change
the limits of some alarms on the controller in the
Limit Setting.
Alarm menue Symbols
An alarm is active
The boiler is in lock mode
HL
The high limit temperature has been
reached
LL
Low limit (Lack of capacity)
P
Pressure problem alarm
A
Electrical problem alarm
F
Flow problem alarm
Se
Sensor problem alarm
The internal clock battery level is low
WARNING LIGHTS
The LEDs above the navigation buttons indicate
3 different boiler states.
Active
warning
light
Boiler status
Green
Normal operation of the boiler
Yellow
One or more alarms are active.
These alarms do not prevent the
operation of the boiler; the boiler
continues to operate in normal
mode.
Ex. The controller detects a problem
with the amperage reading sensor.
Red
A critical alarm is active,
accompanied by the buzzer (if
active).
Ex. A high limit alarm is active
OPERATING PROBLEM
IDENTIFICATION
An alarm log is available in the
BOILER CONFIG
/ ALARM / ALARM LOG
. Each alarm is recorded
with its alarm code, the time and date. The
register can record up to 30 alarms.
EXTERNAL HL / LWCO
When this alarm is present, the indicator light to
the left of the boiler lights red.
This alarm happens when one of the following
contacts is open: the adjustable mechanical high
limit, the manual reset high limit located in the
heating elements compartiment, a low level of
water or an external contact connected to “EXT.
HL” terminals.
The external alarm contact (SCR models only)
will be activated immediately if it has been
activated (
Ext. Alarm Contact
) in the Alarm
menu. The heating elements will stop working
and will start again when the water level or the
other condition returns to normal. If this alarm
happens 3 times in 1 hour or for 60 consecutives
minutes, the boiler will be set in
Lock out
mode.
SENSOR (SE)
The
Sensor
alarm indicates that a courant,
pressure or temperature sensor is defective. This
alarm will also be triggered if the external
temperature is not connected and an operating
condition require this sensor. Generaly the alarm
is coupled with the lettes A, P and F wich
indicates the defective sensor. This condition
does not turn off the boiler (except in the case of
a defective water outlet temperature sensor). The
yellow indicator light stays on as long as the
alarm condition is active.
See Table 13 for comparison of Resistance
measurements against temperature for the
outdoor sensor.
LOW LIMIT (LL)
The
LL alarm
is activated when the temperature
differential between the set-point temperature
and the boiler output temperature is higher than
Delta T.LL
and this period is higher than the
LL
delay
.
The heating elements remain in operation. The
screen will automatically return to its normal state
when the temperature of the boiler approaches
the set temperature.
