– 35 –
Inverter Air-to-Water Heat Pump
Parameters Meaning Explanation Range SI Range Imp.
Modbus
address
Factory Setting Level Notes
H System Control Parameters
H01 Auto start 0-ON/1-YES 1018 1 Factory
H02 Master/Slave Unit External Control
0-Master/1-
Slave
1019 0 1 Factory
0=Controlled
by Touchpad,
1=Controlled by
Wired Connections
H03 Temperature Unit Temperature Units 0-˚C/1-˚F 1020 1 1 Factory
H04
4-way Valve
Polarity
Reversing Valve
(O/B)
0-On-
heating/1-Off-
heating
1021 0 0 Factory
H09 Min Frequency
Minimum
Compressor Speed
20-60hz 1026 30Hz 30 Hz Factory
H10 Max Frequency
Maximum
Compressor Speed
30-120hz 1027 90Hz 90 Hz Factory
H12
Hand Drive
Frequency
Manual
Compressor Speed
0-90hz 1029 0Hz 0 Factory
*Manual control is
disabled
H13
PFC Function
Enable
Power Factor
Correction On/Off
0-Yes/1-No 1030 1 1 Factory
P Pump Control Parameters
P01 Running Mode
Pump Logic,
0=Always on,
1=On with
Call, 2=Pulsed
operation
0- Ordinary
/1- Special /2-
Interval
1167 1 1
Factory/
client
P02
Running Interval
Time
Time between
pulse starts if
P01=2
0~120min 1168 30min 30 min
Factory/
client
P03 Running Duration
Duration of pulse if
P01=2
0~30min 1169 3min 3 min
Factory/
client
P04
Advanced Start
Time
Pump run time
before starting
compressor.
0~30min 1170 1min 1 min
Factory/
client
P05 Manual-control
Manual pump
override
0-No,1-Yes 1171 0 0
R Temperature Control Parameters
R02 Heating Setpoint
Heating Setpoint
(Return)
R08 to R09 1192 40 C 104.0 F
Factory/
client
R03 Cooling Setpoint
Cooling Setpoint
(Return)
R10 to R11 1193 8 C 46.4 F
Factory/
client
R04
Power on return
difference
Start Differential .5-10˚C 1194 2 C 3.6 F Factory
Turns on from
Standby when Temp
exceeds setpoint by
this much
R05
Standby Temp
Difference
Stop Differential 0-10˚C 1195 2 C 3.6 F Factory
Turns off when Temp
passes setpoint by
this much
R08
Min Heating
Setpoint
Minimum Heating
Set Temp (Return)
20-30˚C 1198 30 C 86.0 F Factory
R09
Max Heating
Setpoint
Maxing Heating
Set Temp (Return)
30-60˚C 1199 50 C 122.0 F Factory
R10
Min Cooling
Setpoint
Mining Cooling Set
Temp (Return)
8-20˚C 1200 8 C 46.4 F Factory
R11
Max Cooling
Setpoint
Maxing Cooling
Set Temp (Return)
20-30˚C 1201 20 C 68.0 F Factory
R12 Electric Heating
Electric heater
logic. 0=No electric
heat, 1= Internal
heater, 2= External
heater
0- Not used
/1-Waterline
/2- Water
tank
1202 0 0
Factory/
client
R13
Electric Heater
start difference
Electric Heat Start
Differential
.5-10˚C 1203 5 C 9.0 F Factory
Heater turns on
when temp falls this
far below setpoint
R14
Electric Heater
Start AT
Electric Heat
Operational Temp
-10-30˚C 1204 2 C 34.8 F Factory
Heater is available
when Ambient falls
below this Temp
Parameter List (continued)
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