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3. ALARM CODE AND CONTROL LOGIC:
CODE
CONTENT
The room temperature is
Er1
too high
The water temperature is
Er2
too high
The water temperature is
Er3
too low
Room temperature sensor
Er4
failure
The water temperature
Er5
sensor is faulty
Er6
External input alarms
Er2 and Er3 will only be effective when the water temperature enters the target temperature section
(i.e., between the set temperature and the set temperature + refrigeration difference F2) after
satisfying the start-up alarm delay (A1) or after powering on and forced cooling for 30 seconds
(1) THE CONTROL STATE WHEN THE ALARM IS GENERATED
When the Er3 alarm occurs, the refrigeration and heating relays operate according
to normal logic.
When the Er4 alarm occurs, the water temperature setting (F0) of the controller
runs according to the factory setting. (If the controller works in constant
temperature mode, E4 does not alarm)
In the event of an Er5 alarm, the system should be shutdown regardless of the
state in which it is running.
(2) ALARM STOP SOUND
In the alarm state of the thermostat, press any button to stop the alarm buzzer, but
the alarm display will not stop until the alarm condition is eliminated.
(3) EXTERNAL INPUT ALARM:
After the external input alarm signal and the time of delay setting A9 is satisfied,
Er6 is displayed, the system control is not affected, and the alarm buzzer sounds.
(4)
When Er1-Er6 appears, the alarm buzzer sounds, and when the silencer alarm
key is pressed, the buzzer stops ringing. Alarm output, relay and other faults are
automatically reset after they are removed.
(5)
When Er1-Er6 appears, the alarm buzzer sounds, and when the silencer alarm
ALARM CONDITIONS
Room temperature > temperature ultra-high alarm value (F6
setting value)
Water temperature> set temperature + refrigeration
difference F2 + water temperature super high alarm F4
Water temperature< set temperature - heating return
difference A0 - water temperature ultra-low alarm F5
Room temperature sensors are short-circuited or
open-circuited
The water temperature sensor is short-circuited or
open-circuited
The external connection is lost
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