Assessments - 1, GPA: 4
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Typically, during light freeze conditions, circulating (moving) water will not freeze. In areas where freezing conditions are prevalent and sustained, the heat pump must be winterized as follows: 1) Disconnect all electrical power to the heater; turn off circulating pump. 2) At the two (2) connection unions, disconnect the plumbing to the heater (removal is counter-clockwise). 3) If your unit has an external drain plug, remove plug. This plug would be located at lower, front corner of heater (position may vary between models). Allow water to drain out of the condenser. Replace the winterizing plug by threading the plug in clockwise until just snug, then apply an additional 1/8 turn. 4) If no drain plug is found, unit is self draining from unions. Check online manuals for appropriate winterizing procedures on heat pumps older than 2005. 5) To prevent insects and vermin from entering the plumbing during the winterized period, partially reconnect the two (2) plumbing connection unions: couple each union one or two threads; this will permit condensation to drain, but will prevent most insects and animals from entering the plumbing circuit. START UP To ready a winterized heat pump for use, simply retighten plumbing connection unions. Hand-tight is generally sufficient. SECTION 5 - TROUBLESHOOTING ERROR CODES SYMPTOM RULE OUT RESOLUTION "FLO" Insufficient water flow through heater or circulation pump is off Insufficient 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 Water Pressure Switch Step 3: Request Service “CEr” Error Communication Fault N/A Request Service “CSE” Error Control System Error N/A Request Service “dPC” Error Defrost Sensor Shorted N/A Request Service “dPO” Error Defrost Sensor Open N/A Request Service “FS” Error Unit in defrost mode. Normal defrost mode Step 1: If error persists after air temperature is over 50° F, request service. “HP” Error High Pressure. Insufficient 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 locked. Insufficient Water Flow and/or Filtration Dirty Step 1: Follow steps outlined in “HP” error, then reset circuit breaker to clear error. If error persists, request service. “LP” Error Refrigerant Issue N/A Request Service “LP5” Error Refrigerant Issue N/A Request Service “OTA” Over Temperature Alarm Temperature over 110° F (Unit Locked) Other heating equipment Check if alternate heater (such as a solar heate...
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