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Page 3 

SECTION 3 -  OPERATION 

 

Figure 4 

INDICATOR LIGHTS 

LIGHTS 

EXPLANATION 

SUPPLEMENTAL INFORMATION 

“Pool” 

Pool Thermostat Selected 

 

“Spa” 

Spa Thermostat Selected 

 

“Cooling” 

Actively Cooling Water 

Not applicable for Straight Heat models. 

“Desired Temp” 

Setting Desired Water Temperature 

 

“Water Temp” 

Actual Water Temperature 

 

“Heating” 

Actively Heating Water 

 

Table 3 

BUTTONS 

BUTTONS 

EXPLANATION 

SUPPLEMENTAL INFORMATION 

“Pool / Spa” 

Select between Pool and Spa 

Please note 

– this does not turn off equipment. It only allows a user to 

toggle between the Pool thermostat and the Spa thermostat. 

“Up” 

Select to raise temperature set 
point or move up in a menu choice 

 

“Down” 

Select to lower temperature set 
point or move down in a menu 
choice 

 

“Mode” 

Select a mode 

Modes available are “ACH”, “COOL”, “HEAT”, and “OFF”.  
Please note 

– “ACH” and “COOL” only available on some models. 

Table 4 

DISPLAY 

MESSAGE 

EXPLANATION 

SUPPLEMENTAL INFORMATION 

“000” 

A user lockout code has been 
activated.  

A numeric code is required before any temperature adjustment can 
be entered. Use the “UP” or “DOWN” arrow to enter code, then select 
“MODE” to temporarily unlock Heat Pump. If code is unknown, a re-
set option is available in product manual. Manuals can be 
downloaded from www.AquaCal.com.  

“ACH” 

Auto-Change Over Mode 

When this mode is active, the heat pump will automatically switch 
between heating and cooling modes to maintain a set temperature 
point within 

3 degrees. Feature available for Heat & Cool units. 

“COOL” 

Cooling Mode 

Heat Pump is set to cool the water. Feature available for Heat & Cool 
units. 

“HEAT” 

Heating Mode 

Heat Pump is set to heat water. 

“OFF” 

Unit off 

Heat Pump can be turned off by using “MODE” button or setting 
temperature below 45 degrees. Heat Pump will not allow a set 
temperature to be programmed until turned on again. 

“xx°” 

Current Water Temperature 
(Example 78°) 

Temperature can be set from 45° F to 104° F. This can be displayed 
in Fahrenheit or Celsius depending on programming. 

FLO 

No water flow through Heat Pump 

This can be a normal display depending on system settings. See 
“Troubleshooting” if needed.  

Table 5 

 

POOL 

SPA

 

78

°

 

Pool 

Spa 

Cooling

 

Desired Temp 
Water Temp 
Heating 

UP 

DOWN 

MODE 

Summary of Contents for 135

Page 1: ...Before Installing or Operating Heat Pump LTP0074 Rev 2 12 27 2011 Heat Pump Quick Start Guide Models 035 055 075 115 110 120 121 155 156 175 For product manuals and further installation operation procedures visit www AquaCal com ...

Page 2: ...the risk of fatal Hyperthermia Persons having an adverse medical history or pregnant women should consult a physician before using a hot tub or spa In addition children and the extreme elderly should be supervised by a responsible adult CAUTION Failure to heed the following may result in equipment damage Improper water chemistry can cause damage to pump filter pool shell etc To avoid equipment dam...

Page 3: ...6 feet of the heater s electrical enclosure 2 Never mount power disconnects directly to heat pump 3 Only use copper conductors 4 Use sequencing controllers when multiple heaters are installed on site 5 Local codes and regulations may require the use of a ground fault interruption device GFI Circuit Breaker Nuisance tripping of these devices is common and not covered under the terms of the Manufact...

Page 4: ...red before any temperature adjustment can be entered Use the UP or DOWN arrow to enter code then select MODE to temporarily unlock Heat Pump If code is unknown a re set option is available in product manual Manuals can be downloaded from www AquaCal com ACH Auto Change Over Mode When this mode is active the heat pump will automatically switch between heating and cooling modes to maintain a set tem...

Page 5: ... 3 PPM Bromine 1 to 3 PPM 3 to 5 PPM pH 7 4 to 7 8 PPM 7 2 to 7 8 PPM Total Alkalinity 80 to 140 PPM 80 to 120 PPM Calcium Hardness 200 to 400 PPM 200 to 400 PPM Total Dissolved Solids 1 000 to 2 000 PPM 1 500 to 2 000 PPM Table 7 WINTERIZING In areas where freezing conditions are a rare occurrence allow the filtration system to run continuously throughout the freeze period Typically during light ...

Page 6: ... Water Flow Step 1 Confirm water pump is on and water valves are in the correct position to allow water to flow through Heat Pump If error persists proceed to next step Filtration Dirty Step 2 Confirm filtration system is clean Backwash if needed If error persists proceed to next step Possible Refrigerant Issue Step 3 Request Service HP5 Error Equipment has registered high pressure five times and ...

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