Kensa Heat Pumps 13kW Evo, Руководство по установке и пусконаладке

Страница: 76 / 84

Evo Heat Pump Manual Version 5
Page 76 of 84
7. Fault Finding
Safet
y
in
fo
rmatio
n
G
en
e
ral
p
ro
d
u
ct
in
fo
rmatio
n
In
stal
lati
o
n
Me
ch
an
ic
al
in
stal
lati
o
n
Ele
ctr
ic
al
in
stal
lati
o
n
Me
ch
an
ic
al s
et
to
ru
n
Co
n
tr
o
lle
r
Fau
lt
Fin
d
in
g
W
arr
an
ty
H
eat P
u
mp
se
ttin
gs
s
h
ee
t
In
tr
o
d
u
cti
o
n
Error Code Error
Level Error Message Action
Blank display on
software controller
No Error
No power supply
Check wall mounted electrical isolator switch or call
electrician
Controls MCB tripped Call electrician to investigate cause
There is no call from the time - clock or
thermostat for heat pump operation
Programme time - clock according to manufacturer ’ s
instructions
Dimmed display - No error Display will wake up on touch
Compressor not
running but display
reading temperature
near setpoint
No Error
Heat pump is up to temperature. T1 displayed is
close to set point.
No fault
A1
Fault or
Warning
Ground return temperature T5 is below the
Heating Mode Anti
- freeze Limit .
For single or left hand compressors.
Check Ground Temperature settings - ensure ade-
quate flow in ground side. Error maybe caused by
ground pump failure.
Check Antifreeze concentration.
Compressor 1 will not operate until T5 rises above
the lower limit and the fault has cleared to prevent
heat exchanger damage.
A2
Fault or
Warning
Ground return temperature T6 is below the
Heating Mode Anti
- freeze Limit
For twin right hand compressors only.
Check Ground Temperature settings - ensure ade-
quate flow in ground side. Error maybe caused by
ground pump failure.
Check Antifreeze concentration.
Compressor 2 will not operate until T6 rises above
the lower limit and the fault has cleared to prevent
heat exchanger damage.
TPL:
Fault or
Warning
Pressure in distribution side is below the low
pressure load side limit. (P1)
Top up the load water pressure to clear error. Check
water pressure setup, load side. The fault should
clear by raising the pressure above 1.5 bar based on
default values.
TPG
Fault or
Warning
Pressure in ground side is below the low pressure
ground side limit. (P2)
Top up the ground pressure to clear error. Check
water pressure setup, ground side. The fault should
clear by raising the pressure above 2 bar based on
default values.
HP1 Fault
High refrigeration pressure in discharge gas pipe.
(P5)
Check for flow restriction on load side - usually
accompanied with FLH1 (FLC1 if in cooling). Fault
maybe caused by load pump failure. Check for
temperature probe failure E1
HP2 Fault
High refrigeration pressure in discharge gas pipe.
(P6) Twin compressor only
Check for flow restriction on load side - usually
accompanied with FLH2 (FLC2 if in cooling). Fault
maybe caused by load pump failure. Check for
temperature probe failure E1
DI5 Fault High pressure Switch is open circuit.
Check for flow restriction on load side - usually
accompanied with FLH1 (FLC1 if in cooling). Fault
maybe caused by load pump failure. Check for
temperature probe failure E1
DI6 Fault
High pressure Switch is open circuit. (Twin Com-
pressor Only)
Check for flow restriction on load side - usually
accompanied with FLH2 (FLC2 if in cooling). Fault
maybe caused by load pump failure. Check for
temperature probe failure E1
FLH1 Warning
Temperature differential T2 - T1 (load tempera-
ture leaving the heat pump—low temperature
entering the heat pump) is greater than low flow
differential.
Check load pump speed
Check load flow
Check for flow restrictions in distribution system
Check set low flow differentials
FLH2 Warning
Temperature differential T3 - T1 (load tempera-
ture leaving the heat pump - load temperature
entering the heat pump) is greater than low flow
differential. (For twin compressors only)
Check load pump speed
Check load flow
Check for flow restrictions in distribution system
Check set low flow differentials
FGH1 Warning
Temperature differential T4 - T5 (Temperature of
the thermal transfer fluid returning to the heat
pump from the ground—Temperature of the
thermal transfer fluid leaving the heat pump to
the ground.)
is greater than set point.
Check ground pump speed
Check ground flow
Check for flow restrictions on ground side
Check set low flow differentials