Danfoss EKE 1A User Manual

8.1.5 Application alarms
Table 59: Application alarms
Label
Alarm description
Actions during ac‐
tive
Trigger (how the alarm IS
raised)
How to clear the alarm
Remark
A994
Low S4 media outlet
temperature
Injection active and Min S4
function active and S4 below
MIN S4 set point - Low Min S4
band and Low Min S4 delay ex-
pired
Injection not active or Min S4
function disabled or S4 above
MIN S4 set point - Low Min S4
band
Media out temperature is below alarm lim-
it and alarm delay has expired.
A991
High evaporation
pressure (MOP)
Injection active and Mop active
and Te higher than mop set
point + MOP alarm dierential
and MOP alarm delay expired
Injection not active or Mop dis-
abled or Te below mop set
point + MOP alarm dierential
Pe /Te is higher than alarm limit and alarm
delay has expired.
A990
Low evaporation
pressure (LOP)
Injection active and Lop active
and Te lower than lop set point
- LOP alarm dierential and
Cond temp alarm delay expired
Injection not active or Lop disa-
bled or Te above lop set point +
LOP alarm dierential
Pe /Te is lower than alarm limit and alarm
delay has expired.
A989
High condensing
temperature
Injection active and HCTP ac-
tive and Tc above HCTP set
point + Cond. temp.alarm dif-
ferential and LOP alarm delay
expired
Injection not active or HCTP
disabled or Tc below HCTP set
point + Cond. temp.alarm dif-
ferential
Pc / Tc is higher than alarm limit and alarm
delay has expired.
A988
(1)
High superheat
Injection active and SH above
SH reference +High SH alarm
dierential and High SH alarm
delay expired
Injection not active or SH below
SH reference +High SH alarm
dierential
Superheat is higher than alarm limit and
alarm delay has expired.
A987
(2)
Low superheat
Injection active and SH below
SH reference - low SH alarm dif-
ferential and low SH alarm de-
lay expired
Injection not active or SH above
SH reference - low SH alarm dif-
ferential
Superheat is below alarm limit and alarm
delay has expired.
A986
Lack of valve capaci-
ty
Injection active and OD higher
than max OD - 5% for more
than 90 96 of Lack of capacity
alarm delay time
Injection not active or OD high-
er OD - 5% in less than 88% for
Lack of capacity alarm delay
time
Valve is running close to full capacity for
long time.
E135
Error in Heat/Cold in
thermostat mode
Use of DI as H/C function in
thermostat mode.
Avoid H/C function in DI while
in thermostat mode.
H/C function not available in thermostat
mode.
(1)
• Length of monitoring window for High superheat detection can be adjusted using parameter [A108 – High SH alarm delay]. If the parameter
is set to 0 the function is disabled.
• The high superheat limit is dened by the user through parameter [A109 – High SH alarm dierential] High superheat limit= SH ref+ High SH
alarm dierential.
(2)
• Length of monitoring window for Low superheat detection can be adjusted using parameter [A110 – Low SH alarm delay]. If the parameter
is set to 0 the function is disabled.
• The high superheat limit is dened by the user through parameter [A998 - Low SH alarm dierential]
Low superheat limit= SH ref- Low SH alarm dierential, If Low superheat limit is lower than SH close set point, then
Low superheat limit= SH close set point.
(1)
• Length of monitoring window for High superheat detection can be adjusted using parameter [A108 – High SH alarm delay]. If the parameter
is set to 0 the function is disabled.
• The high superheat limit is dened by the user through parameter [A109 – High SH alarm dierential] High superheat limit= SH ref+ High SH
alarm dierential.
(2)
• Length of monitoring window for Low superheat detection can be adjusted using parameter [A110 – Low SH alarm delay]. If the parameter
is set to 0 the function is disabled.
• The high superheat limit is dened by the user through parameter [A998 - Low SH alarm dierential]
Low superheat limit= SH ref- Low SH alarm dierential, If Low superheat limit is lower than SH close set point, then
Low superheat limit= SH close set point.
8.1.6 Thermostat alarms
Table 60: Thermostat alarms
Label
Alarm description
Actions during ac‐
tive
Trigger (how the alarm IS
raised)
How to clear the alarm
Remark
A993
High temperature
Thermostat active and thermo-
stat temperature (s4/ S3) above
actual reference + Upper tem-
perature alarm for Temperature
alarm delay time
Thermostat not active or ther-
mostat temperature (s4/S3) be-
low actual reference + Upper
temperature alarm
Thermostat temperature is higher than
alarm limit and alarm delay has expired
A992
Low temperature
Thermostat active and thermo-
stat temperature (s4/ S3) below
actual reference - lower tem-
perature alarm for Temperature
alarm delay time
Thermostat not active or ther-
mostat temperature (s4/S3)
above actual reference - lower
temperature alarm
Thermostat temperature is lower than
alarm limit and alarm delay has expired
© Danfoss | Climate Solutions | 2022.06 BC398828796060en-000101 | 75
Superheat controller, Type EKE 1A, 1B, 1C, 1D

Danfoss EKE 1A Specifications

General

Brand	Danfoss
Model	EKE 1A
Category	Controller
Language	English