Herz BW/WW, Operating Instructions Manual

Page: 60 / 65

9 Fault reports and their corrections
60 Betriebsanleitung_commotherm_5_15_SW_WW_Touch_Englisch_V1.2
No. Fault report Cause of fault Fault correction
200 HP flow sensor
Failure
Heat pump-flow sensor
 Check sensor, replace as necessary
 Check plug, replace as necessary
 Check wiring incl. Connections,
replace as necessary
 ✆
- contracting party
201 HP back flow sensor
Failure
Heat pump-back flow sensor
 Check sensor, replace as necessary

Check plug, replace as necessary
 Check wiring incl. Connections,
replace as necessary

✆
- contracting party
202 HP source input sensor
Failre source input temperature
sensor
 Check sensor, replace as necessary

Check plug, replace as necessary
 Check wiring incl. Connections,
replace as necessary

✆
- contracting party
203
HP source output
sensor Failre source output temperature
sensor
 Check sensor, replace as necessary
 Check plug, replace as necessary
 Check wiring incl. Connections,
replace as necessary

✆
- contracting party
204 HP hot gas sensor
Failure hot gas sensor of the
refrigerant circuit
 Check sensor, replace as necessary
 Check plug, replace as necessary

Check wiring incl. Connections,
replace as necessary

✆
- contracting party
205 HP source temp. low
 Failure source pump
 System pressure too low
 Exhausted source
 Function control source pump
 Check system pressure
 ✆
- contracting party
206
HP high pressure
triggered
Der Druck ist außerhalb des
definierten Bereiches, indem der
Verdichter arbeiten soll. 
Function control condensator pump
(heating pump)

✆
- contracting party
207
HP low pressure
triggered
 The pressure is outside of the
range where the compressor
should work.
 Failure source pump
 Lack of refrigerant
 Failure source output sensor
 Visual Control of the refrigerant
control regarding leakage

✆
- contracting party
208 HP max. temp. reached
´The flow temperature of the heat
pump has reached the max.
temperature.  Check HP paramter (Max. Temp may
not be higher than 58°C).

✆
- contracting party
209 HP softstarter
 Rotating field direction is false
(left instead of right)
 Phase error
 Phase is missing

✆
- contracting party
210 HP evaporator Error is currently not taken!  -
211 HP refrigerant sensor
Failure refrigerant sensor of the
refrigerant circuit
 Check sensor, replace as necessary
 Check plug, replace as necessary
 Check wiring incl. Connections,
replace as necessary
 ✆
- contracting party
212 HP max. hot gas temp.
Maximum hot gas temperature of
125°C was reached.

✆
- contracting party
213 HP hot gas compr. start Error is currently not taken!  -
214
HP water pressure too
low
System pressure too low

✆
- contracting party