ECR International AT Serie Manuel D'installation, D'utilisation Et D'entretien page 15

Boiler Display Codes
Display Description
ON Boiler in On mode
OFF Boiler in Off mode
Comfort Heating Setting
CHS
Domestic Hot Water Setting
dHS
dFS Differential Setting
dEg Degrees Temperature scale
Stg Heating Element Stages
EL Active Elements
dFt Dry Fire Test
Load Management
LdC
F Degrees Fahrenheit
C Degrees Centigrade
1-2 Elements 1 & 2 Active
3-4 Elements 3 & 4 Active
Fault Codes
Display Failure
Element-1 relay failure
r1
Element-2 relay failure
r2
Element-3 relay failure
r3
Element-4 relay failure
r4
Dry Fire Failure
dFF
Temperature sensor open
tSO
Temperature sensor
tSS
shorted
Abnormal Power
AbP
Flow Switch Open
FLO
Low Water Cutoff Open
LCO
High limit(s)
HL
Control Hardware
CHF
Freeze Protection
FP
SEQUENCE OF OPERATION
Range
90-180°F (32-82°C)
90-180°F (32-82°C)
4-20°F (2-11°C)
F or C
2 or 4
1-2 or 3-4
Displayed when LMC terminals
open
Two element boiler only
Two element boiler only
Alarm Boiler state
Audible ON
Alarm
Audible ON
Alarm
Audible ON
Alarm
Audible ON
Alarm
Audible ON
Alarm after 3
attempts
Audible ON
Alarm
Audible ON
Alarm
Audible Control voltage
Alarm outside the range of
18-30 Vac
Audible Flow switch open
Alarm (Installer item)
Audible Low Water Cutoff
Alarm open (Installer item)
Audible High Limit(s) Open
Alarm
Audible Control Hardware
Alarm Failure
No Audible Water temperature
Alarm below 45°F (27°C)
15
Note
Control prevents setting from being higher
than Domestic Hot Water Setting
Control prevents setting from being lower
than Comfort Heating Setting
Applies to CHS & dHS
Indicates either 2 or 4 element boiler
Only available if Stg is 2
Displayed when power initially applied
De-activates heating elements. Diverts TT
to TT Aux for secondary appliance.
Only available if Stg is 2
Only available if Stg is 2
Action Required
Check all circuit breakers. Reset power
by cycling pump circuit breaker (15 A)
or pressing and holding MODE/PWR
button for 2 seconds. Call for service if
problem persists.
Check for adequate water supply.
Correct fault, reset power.
Check sensor wiring connection.
Replace temperature sensor.
Verify all circuit breakers are on. Call for
service if problem persists
Check water flow or flow switch (if
installed)
Check water level or LWCO (if installed)
Reset power, Call for service
Call For Service
Control energizes pump and heating
mode until WT reaches 55°F.
PN 240013676 REV. A [07/01/2022]