SpacePak Solstice ILAHP48, Installation And Operation Manual, Page: 51 / 56

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ILAHP Inverter Extreme Air-to-Water Heat Pump
SECTION 7: TROUBLESHOOTING
ILAHP Error Codes
Error
Code Description
Cause Solution
P01 Inlet Water Temp Sensor Sensor failed open or shorted. Wiring fault Correct wiring or replace 5k sensor T1
P02 Outlet Water Temp Sensor Sensor failed open or shorted. Wiring fault Correct wiring or replace 5k sensor T2
P032 DHW Water Temp Sensor Sensor failed open or shorted. Wiring fault
Correct wiring or replace 5k sensor (optional
component)
P04 Ambient Air Temp Sensor Sensor failed open or shorted. Wiring fault Correct wiring or replace 5k sensor T6
P153 OD Coil Temp Sensor Sensor failed open or shorted. Wiring fault Correct wiring or replace 5k sensor T5
P17 Suction Line Temp Sensor Sensor failed open or shorted. Wiring fault Correct wiring or replace 5k sensor T4
P181 Discharge Line Temp Sensor Sensor failed open or shorted. Wiring fault Correct wiring or replace 50k sensor T3
P182 Discharge Line Overtemp Excessive discharge Temp, over A06
Excessive Suction Superheat or compressor
fault Default value of A06 is 239°F
P001 EVI Inlet Temp Sensor Sensor failed open or shorted. Wiring fault Correct wiring or replace 5k sensor T8
P002 EVI Outlet Temp Sensor Sensor failed open or shorted. Wiring fault Correct wiring or replace 5k sensor T9
TP Low Ambient Protection Outdoor temperature is below A03 setpoint
Normal operation based upon parameter
setting
E032 Flow Switch protection Water flow is below acceptable level
Ensure pump and plumbing are cabable of
achieveing required flowrate
E04 Aux heater overtemp Safety switch has tripped or circuit failed open Determine cause of overtermp, correct or
repair circuit
E051 Compressor overload
Excessive current draw due to high
discharge temperature or low input voltage
Ensure 220-240V to the unit under max load,
sufficient water flow (if in heating) or outdoor
air flow (if in cooling)
E08 Loss of communication with Remote Display Remote display failure or wiring fault
Correct wiring or replace Remote Display
VT1
E081 Loss of communication with Fan Speed Control Fan Speed Control failure or wiring fault Correct wiring or replace control board IC3
E11 High Discharge Pressure
High discharge pressure or switch or circuit
failed open
If fault remains constant, correct wiring or
replace switch S3
E12 Low Suction Pressure
Low discharge pressure or switch or circuit
failed open
If fault remains constant, correct wiring or
replace switch S2
E171 Freeze Protection
Water temperature below 63°F When
Ambient T is below 36°F
Check water temperature. If it is over 63°F,
check or replace 5k sensors T6 or T7
E19 Primary Freeze Protection
Inlet Water Temperature between 32° and
36°F and Ambient T is below 32°F
Check water temperature. If it is over 36°F,
check or replace 5k sensors T6 or T7
E29 Secondary Freeze Protection
Inlet Water Temperature below 32° and
Ambient T is below 32°F
Check water temperature. If it is over 36°F,
check or replace 5k sensors T6 or T7
F031 DC Fan motor #1 Failure Wiring fault or fan motor #2 has failed Check and repair wiring, replace fan motor.
F032 DC Fan motor #1 Failure Wiring fault or fan motor #1 has failed Check and repair wiring, replace fan motor.