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Model library · GE Water Softener & Filtration

PNRQ21RRB

GE Profile PNRQ21RRB Reverse Osmosis Repair

Arrange a Repair(713) 547-5545

Most common issues on this model

  1. Faucet trickling when the tank air charge is gone
  2. Cartridge leak at the head after a filter change
  3. Water tasting stale if the filter is overdue
  4. Tank taking too long to recover

The GE Profile PNRQ21RRB is a reverse osmosis filtration system with a 4-gallon storage tank and an FQROPF filter. At 10 1/2 in wide it is built for the space beneath a kitchen sink.

We approach a reverse osmosis system by working from the tank outward. A gauge reading tells us whether the air charge is intact, the feed valve tells us whether the supply is open, and the filter and head show whether the cartridge is loading up or leaking. The drain line gets a look too.

This model is also listed with a variant, PNRQ21RBN, so the exact label matters when we order. We quote in writing before starting, and repairs carry our 30-day workmanship warranty. Many households also like to know what we leave in place, so we tell you what we replaced and keep the old part for you to see if you ask.

Key features

  • Profile-line RO filtration system
  • 4-gallon storage tank
  • Uses the FQROPF filter
  • Cabinet-friendly 10 1/2 in width
→Codes

Error codes this model can show

Err + fast blue lightGE SmartWater Softener GXSH40V Err Flashing: Electrical problem alert DAYS TO EMPTY flashingGE SmartWater Softener GXSH45V Low Salt: Days to empty flashing Blue indicator light flashingGE SmartWater Softener GXSH40V Blue Light Flashing: Power interruption ERR 01GE Softener GXSF27E Code ERR 01: Motor and switch circuit ERR 02GE Softener GXSF31E Code ERR 02: Position switch ERR 03GE Softener GXSF40H Code ERR 03: Motor or harness ERR 04GE Softener Code ERR 04: Position switch or wiring harness ERR 05GE Softener Code ERR 05: Control board check
PNRQ21RRBPNRQ21RRB questions
How do you check the tank on a reverse osmosis unit?

We close the tank valve, bleed it and read the air charge with a gauge. A tank without air gives a trickle at the faucet even when the system makes water.

Is there a variant of the PNRQ21RRB?

The listing shows PNRQ21RBN as a variant. We read your label and order against that exact number. Variant numbers can differ in small parts, so we match the order to the exact label rather than the family.

How often should the filter be changed?

Follow the schedule in your owner manual. When flow slows or taste changes sooner, the FQROPF is the first thing we check. Neglected cartridges also strain the membrane, so changing them on time protects the rest of the system.

Book a visit

Book repair for your PNRQ21RRB

Book in about a minute, or call the desk. Same-day windows inside the Loop on most days, next-day across the rest of Houston.

(713) 547-5545