24 of 39
Dated 17/09/19 V1.2
ESP-HC-DHW 11DC
ESP-HC-DHW 17DC
protection
source temp too low 2.Water source water flow volum
not enough
EF
Water source water flow not
enough
No flashing
Water source water flow volume not enough
EG
Indoor ambient sensor error
No flashing
Temp sensor open circuit or short circuit
F1
voltage protection
Flashes once
Voltage is too high or too low, heat pump will
recover when voltage is normal (165~265VAC)
F2
power module PFC error
Red flashing
IPM module error or wire connection wrong
F3
Compressor abnormal stop
Red flashing
Compressor stops abnormally
F4
Outdoor module radiator sensor
error
Flash 5 times
Temp sensor open circuit or short circuit
F5
Outdoor current sensor error
Flash 8 times
Current sensor fault or no test wire cross it
F6
IPM error or Module control board
error
Red flashing
Communication or IPM module fault
F7
Compressor fail to start up
Red flashing
Compressor cannot start properly
F8
Outdoor over current
Red flashing
Compressor current is too high
F9
Discharge sensor error
Flash 7 times
Temp sensor open circuit or short circuit
FA
Outdoor module overheat, over
current
Flashes 5 times
IPM module temp too high or compressor current too
high
FB
/E8
Outdoor coil over heat
Flashes 15 times
Outdoor heat exchange not good
P1
High pressure protection
Flashes 2 times
1.Refrigerant volume too high 2. throttling part
error, 3. High pressure switch error
P2
Low pressure protection
Flashes 9 times
1.Refrigerant volume too low 2. throttling part
error, 3. low pressure switch error
P3
Compressor discharge air over
heat protection
Flashes 10 times
1.Refrigerant too low, 2. throttling part error
P4
Over current protection
Flashes 11 times
1.Refrigerant volume too High 2. throttling part error,
Current sensor error
P5
Indoor unit water flow error
No flash
1.Water flow volume too low 2. Water flow switch err
P6
Outdoor water flow error (For GH) Flashes 17 times
1.Water source side water flow volume too small
2. Water source side Water flow switch error
P7
Miss phase
Red flashing
Power supply error
P8
Wrong phase
Red flashing
Power supply error
P9
Communication error
Red flashing
Communication wire or PCB error
Note: not all errors are applicable to Solis Units
4.6 System Parameter Table
THESE SHOULD NOT BE CHANGED WITHOUT
CONSULTING THE INSTALLING ENGINEER
Code Name
Range
Default
Remark
P00 Auto restart (after power supply, unit come back to the
previous working mode before power cut off)
0:off, 1:on
1
P01 DHW hot water temp difference
2~15°C
，
minus difference
2°C
P02 AC temp difference
2~15°C
，
minus difference
2°C
P03 Coil copper pipe temp to active defrost
-20~5°C
0°C
P04 Water source side anti-freeze temp (for Geo heat pump)
-20~5°C
2°C
P06 Coil copper pipe temp to stop defrost
10~35°C
30
°C
P07 Defrost time (defrost action lasting max time, will stop defrost
if longer than this value)
15~99 minutes
15
P08 Defrost interval time (time between 2 defrosts, less than this
value, it will not defrost)
15~99 minutes
35
P09 Ambient temp to activate hot water e-heater
-20~20°C
0°C
P10 Ambient temp to activate AC e-heater
-20~20°C
0°C
P11
DHW frequency limitation percentage on max frequency.
(If heat pump max is 90HZ, P11=9, DHW runs @ 81hz)
2~10(equal to the highest
frequency 20~100%)
10
P12 Compressor discharge air protection temp (higher than the
setting, it will protect)
100~127°C
115
°C
P13 Defrost interval control
(if P08=35minutes, P13=2, interval between defrost will be
35*2=70Minutes)
0:no defrost:1~4, defrost interval
time multiple rate
1
