Herz commotherm 30 SW, Operating Instructions Manual

Page: 72 / 80

8 Fault reports and their corrections
72
cascade
189 KAS ALARM
Leading heat pump couldn't be
started or got stopped
200 HP - flow sensor
Failure
heat pump flow sensor
201 HP - back flow sensor
Failure
heat pump back flow sensor
202
HP source input sensor
sensor
Failure source input temperature
sensor
source input sensor
203
HP source output
sensor
sensor
Failure source inlet temperature
sensor
source output sensor
204 HP hot gas sensor
Failure hot gas sensor on the hot
gas side of the cooling circuit
205
HP source temp. low
low
 Failure source pump
 System pressure is too low
 Exhausted source
206
HP High pressure
triggered
The pressure is outside the
defined
range, where the
compressor should operate.
207
HP low pressure
triggered
 The pressure is outside the
defined range, where the
compressor should
 Failure source pump
 Lack of refrigerant
 Failure source output sensor
208
HP max. temp.
reached
The flow temperature of the heat
pump has reached the max.
temperature.
209 HP softstarter
 Rotating field direction is false
(left instead of right)
 Phase error

Phase is missing
210 HP evaporator Error
211 WP refrigerant sensor
Failure refrigerant sensor of the
refrigerant circuit
212
HP max. hot gas temp.
temp. Maximum hot gas temperature of
125°C was reached.
No. Fault report
213
HP hot gas
compr. start
Error is currently not taken!
orts and their corrections
cascade
Leading heat pump couldn't be
started or got stopped
 Start leading heat pump

✆
- contracting party
Failure
heat pump flow sensor

Check sensor, replace asnecessary
 Check plug, replace asnecessary
 Check wiring incl. connections,
replace asnecessary

✆
- contracting party
Failure
heat pump back flow sensor

Check sensor, replace
 Check plug, replace as necessary
 Check wiring incl. connections,
replace asnecessary

✆
- contracting party
Failure source input temperature
sensor
source input sensor
 Check sensor, replace asnecessary
 Check plug, replace asnecessary
 Check wiring incl. connections,
replace asnecessary

✆
- contracting party
Failure source inlet temperature
sensor
source output sensor
 Check sensor, replace asnecessary

Check plug, replace
 Check wiring incl. connections,
replace asnecessary

✆
- contracting party
Failure hot gas sensor on the hot
gas side of the cooling circuit
 Check sensor, replace asnecessary

Check plug, replace asnecessary
 Check wiring
replace asnecessary

✆
- contracting party
Failure source pump
System pressure is too low
Exhausted source
 Function check source pump
 Check system pressure

✆
- contracting party
The pressure is outside the
defined
range, where the
compressor should operate.

Function check condenser pump
(heating pump)

✆
- contracting party
The pressure is outside the
defined range, where the
compressor should operate.
Failure source pump
Lack of refrigerant
Failure source output sensor
 Visual control of the refrigerant circuit
regarding leakage

✆
- contracting party
The flow temperature of the heat
pump has reached the max.
temperature.
 Check heat pump
temp may not be higher than 58°C).

✆
- contracting party
Rotating field direction is false
(left instead of right)
Phase error
Phase is missing

✆
- contracting party
Error is currently not taken!  -
Failure refrigerant sensor of the
refrigerant circuit
 Check sensor, replace asnecessary

Check plug, replace asnecessary
 Check wiring incl. connections,
replace asnecessary

✆
- contracting party
Maximum hot gas temperature of
125°C was reached.

✆
- contracting party
Cause of fault Fault correction
Error is currently not taken!  -
Start leading heat pump
contracting party
Check sensor, replace asnecessary
Check plug, replace asnecessary
Check wiring incl. connections,
replace asnecessary
contracting party
Check sensor, replace as necessary
Check plug, replace as necessary
Check wiring incl. connections,
replace asnecessary
contracting party
Check sensor, replace asnecessary
plug, replace asnecessary
Check wiring incl. connections,
replace asnecessary
contracting party
Check sensor, replace asnecessary
Check plug, replace asnecessary
Check wiring incl. connections,
replace asnecessary
contracting party
Check sensor, replace asnecessary
Check plug, replace asnecessary
Check wiring incl. connections,
replace asnecessary
contracting party
Function check source pump
Check system pressure
contracting party
Function check condenser pump
(heating pump)
contracting party
Visual control of the refrigerant circuit
regarding leakage
contracting party
Check heat pump parameter (Max.
temp may not be higher than 58°C).
contracting party
contracting party
Check sensor, replace asnecessary
Check plug, replace asnecessary
Check wiring incl. connections,
replace asnecessary
contracting party
contracting party
Fault correction