background image

10

ENVISION POOL HEATER INSTALLATION MANUAL 

Preventive Maintenance

WARNING: Disconnect electrical power to unit before 
starting any maintenance to prevent serious injury from 
shock.

Protecting the Heater

Keep the pool filter system clean and free of restrictions 

• 

to ensure proper water flow.
Check water chemistry regularly. Misuse of chemicals 

• 

will cause permanent damage to the heater and other 
pool equipment. Manufacturers can void warranties for 
damage as a result of poor water quality.
Free airflow is essential. Keep the evaporator coil clean 

• 

and free of weeds, leaves, grass clippings, dirt, and other 
debris that will decrease the airflow. Keep fences and 
shrubs away from air inlets (sides and back of heater).
Frequent rinsing of the evaporator with fresh water will 

• 

remove buildup from its surface. Always spray the coil 
gently with a regular garden hose being careful no to 
bend aluminum fins.
Regular cleaning of the cabinet will improve its 

• 

appearance and extend the life of the finish.

Winterizing

When the heater is exposed to freezing temperatures, it is 
essential that all water within the unit be properly drained. 
When water freezes, it expands, damaging piping.

Turn thermostat settings to OFF. Turn filter pump to OFF.

• 

Turn power to unit OFF (i.e. pull disconnect or turn circuit 

• 

breaker OFF).
Disconnect water inlet and outlet unions at the back of 

• 

the unit, be careful no to lose rubber o-rings.
Flush the heater piping out with fresh water to remove 

• 

any residual chemicals.
Use low-pressure air or vacuum to remove water that has 

• 

accumulated inside the piping of the heater.

Troubleshooting

Check to be sure that the electrical power is ON. Reset 

1. 

the breakers or replace fuses if necessary.
Check to be sure the electronic control panel is set 

2. 

properly. The unit must be in either the POOL or SPA 
mode and the desired temperature must be set above 
the actual pool or spa temperature for the heater to 
run. If an error code is displayed, reference the table 
below to determine the cause.
Check to make sure the evaporator coil has enough 

3. 

clearance and that there are no restrictions to its 
airflow.
Certain ambient air conditions may cause the heater 

4. 

to go into defrost mode. The defrost mode will be 
indicated by the Defrost LED.

NOTE:

 It is normal for water to drip from the drain holes at 

the base of the heater. The unit produces condensate when 
it operates.

The following table lists error codes as the would appear 
on the electronic control display. In the event that an 
error does occur, check the possible causes list for the 
corresponding error to correct the problem.

Error Code

Description

Possible Causes

F1

Internal Flow 
Switch Open

Little or no water flow
The pump is not running
The filter is dirty or clogged
Shortage of water to pump, air leak
Undersized pump
Valves not in correct position
Filter in backwash mode
Water pressure switch needs 

adjustment or its defective

FS

Internal Flow 
Switch Open 
Remote Mode

Same as above

HP

High Pressure 
Switch Open

Low water flow to heater
Defective high pressure switch

LP

Low Pressure 
Switch Open

Evaporator coil is dirty
Fan motor is not running
Low refrigerant pressure
Defective low pressure switch

PO

Water Thermistor 
Open

Loose sensor wire
Defective water thermistor

HC

Water Thermistor 
Closed

Wire terminals touching
Defective water thermistor

dO

Defrost Sensor 
Open

Loose sensor wire
Defective defrost sensor

Dc

Defrost Sensor 
Closed

Wire terminals touching
Defective defrost sensor

bO

Control Voltage 
Below 18VAC

Low supply voltage to the unit

Summary of Contents for AC-1750B

Page 1: ...Installation Information Water Piping Connections Chemical Use Electrical Startup Procedures Preventive Maintenance Troubleshooting IM1009PN 07 10 Envision Pool Heater Installation Manual Pool Heater ...

Page 2: ......

Page 3: ...ntroduction 4 General Performance 4 Installation 4 Water Flow and Connections 5 Chemical Use 5 Electrical Connections 6 Electrical Data 6 Electronic Control Panel 7 Modes of Operation 7 Wiring Schematic 8 Startup Procedures 9 Preventive Maintenance 10 Troubleshooting 10 ...

Page 4: ...manual was prepared to assist in the proper installation operation maintenance and service of your new heat pump pool heater Please read the entire manual and follow all instructions Improper installation and use can result in damage to the heater unsatisfactory operation and may void the warranty Retain this manual for quick reference Installation When selecting a location consider the following ...

Page 5: ...rain Skimmer Check Valve Chlorine Gas Trap Ball Valves Filter Pump In Out Heat Pump Pool Heater Heat Pump Pool Heater In Out Pump Filter From Main Drain Skimmer Return Ball Valve For Flow Rates Greater than 70 gpm or Pumps Larger than 1 5 H P Typical Installation Installation with In line Chlorinator Installation with Pool and Spa Chemical Use Water quality must be checked regularly and maintained...

Page 6: ...uit directly to the electrical control enclosure will ensure a moisture tight seal extending the life of the heater Attach grounding conductor to the ground lug provided 4 inside the electrical control enclosure Install L1 and L2 input conductors to the input lugs of 5 the compressor contactor Connect bond wire at least 8 solid copper wire from 6 bond lug on the right side of coil header plate to ...

Page 7: ...minal strip and install the remote control system The mode jumper must be on pins 3 4 for this mode of operation See the Terminal Strip and Mode Configuration Pins illustration for pin settings 4 3 2 1 Mode Configuration Pins Removable Jumper Electronic Controller 1 2 3 4 5 6 7 8 9 10 11 12 Terminal Strip Terminal Strip and Mode Configuration Pins Electronic Control Panel Control Settings Temperat...

Page 8: ...Remote Automation Microprocessor Control TEST PIN CC HP LP DC WT FS1 FS2 Field Installed Flow Switch See Table 1 Remote Automation Jumper P1 P2 P3 PIN 1 2 3 Field Installed home automation control See Table 1 See Table 1 Fan1 Interface Panel 9 10 11 12 TS 4 Green 7 8 1 2 TS 3 4 5 6 24 LP LP HP HP CC CCG F2 F1 C PIN 1 X3 X3 X2 X2 X1 X1 WAT WAT FP FP Compre ssor Unit Po wer Su pply 208 230 60 1 CC T...

Page 9: ... conductive A pool cover solar blanket may reduce initial heating time by up to 50 Defrost Cycle The heat pump pool heater has automatic defrost When the outdoor temperature drops below 40 F frost may start to form on the evaporator coil Frost buildup will be heaviest on humid days when the temperature is between 35 40 F During the defrost cycle the Defrost LED will be illuminated to indicate that...

Page 10: ...reakers or replace fuses if necessary Check to be sure the electronic control panel is set 2 properly The unit must be in either the POOL or SPA mode and the desired temperature must be set above the actual pool or spa temperature for the heater to run If an error code is displayed reference the table below to determine the cause Check to make sure the evaporator coil has enough 3 clearance and th...

Page 11: ......

Page 12: ...l Inc 9000 Conservation Way Fort Wayne IN 46809 www waterfurnace com 2010 WaterFurnace International Inc 9000 Conservation Way Fort Wayne IN 46809 9794 WaterFurnace has a policy of continual product research and development and reserves the right to change design and specifications without notice IM1009PN 07 10 ...

Reviews: