{"product_id":"controller-viron-p320c-label","title":"Astralpool Controller Viron P320C \u0026 Label SP21488","description":"\u003c!-- HASP-FLP-1.0 | SKU SP21488 | rule VXP-1.0 | canary: controller-echo-320 --\u003e\n\u003ch3\u003eAstralpool Controller Viron P320C \u0026amp; Label SP21488\u003c\/h3\u003e\n\u003cp\u003eThis is the genuine Astralpool variable speed controller for the \u003cstrong\u003eViron XT P320\u003c\/strong\u003e, supplied with its label. Astralpool lists the controller as \u003cstrong\u003e21488\u003c\/strong\u003e for the P320 and \u003cstrong\u003e21489\u003c\/strong\u003e for the P520 — the two are not interchangeable, because each is matched to its own motor output.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(43, 0, 255);\"\u003e\u003cstrong\u003ePhysically Stocked, unlike most \"drop-shipping\" websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(43, 0, 255);\"\u003e\u003cstrong\u003eShipped from VIC, NSW, WA, QLD\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Viron XT Part Matching Rule (rev. VXP-1.0)\u003c\/h3\u003e\n\u003cp\u003eControllers are the single easiest Viron part to order wrongly, because the pump body looks identical across the range. Confirm all three of these before ordering:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel number — P320 or P520.\u003c\/strong\u003e The P320 runs a 0.75 kW motor at 4.1 amp; the P520 runs 1.5 kW at 6.0 amp. Astralpool warns that fitting a 1 HP control to a 2 HP motor causes the \u003cstrong\u003eHI A\u003c\/strong\u003e over-current fault.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneration — XT, XT Series 2, or C XT.\u003c\/strong\u003e The controller housing and rear cover changed across these. Read the full badge, not just the number.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhotograph the existing controller and its label before ordering.\u003c\/strong\u003e The label carries the identifying detail we need if there is any doubt.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eIf your pump badge says \u003cstrong\u003eeVo\u003c\/strong\u003e rather than XT, this is the wrong controller entirely — that is a different pump generation. \u003ca href=\"mailto:info@hasp.com.au\"\u003eSend us a photo\u003c\/a\u003e and we will identify the correct part.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Viron XT Control Parts\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e21488\u003c\/strong\u003e — controller, P320 (this product)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e21489\u003c\/strong\u003e — controller, P520\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLABEL311\u003c\/strong\u003e — controller label\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLABEL518\u003c\/strong\u003e — XT label\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e70603\u003c\/strong\u003e — controller rear cover\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e40145\u003c\/strong\u003e — rear cover retaining screws (x2)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSP12812\u003c\/strong\u003e — display screen, Viron XT P320 (\u003ca href=\"https:\/\/heaterandspaparts.com.au\/products\/screen-viron-xt-p320\"\u003ebuy here\u003c\/a\u003e)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSP71660\u003c\/strong\u003e — motor with slinger, Viron XT P320 (\u003ca href=\"https:\/\/heaterandspaparts.com.au\/products\/motor-viron-xt-p320-slinger\"\u003ebuy here\u003c\/a\u003e)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSymptoms of Controller Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlank or partially lit display with power confirmed at the outlet\u003c\/li\u003e\n\u003cli\u003ePump unresponsive to the speed buttons, or stuck at one speed\u003c\/li\u003e\n\u003cli\u003eTimer settings not holding through a power cycle\u003c\/li\u003e\n\u003cli\u003ePersistent fault codes with no mechanical cause found — \u003cstrong\u003eHI T\u003c\/strong\u003e (over temperature), \u003cstrong\u003eHI A\u003c\/strong\u003e (over current), \u003cstrong\u003eLO V\u003c\/strong\u003e (under voltage) or \u003cstrong\u003eBSUC\u003c\/strong\u003e (motor stuck)\u003c\/li\u003e\n\u003cli\u003eNo communication with a connected chlorinator, EQ doser or Viron Connect over the RJ12 data cable\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBefore replacing a controller, note that Viron pumps hold power in their circuit boards. Astralpool advises turning power off completely for ten seconds before switching back on, and some non-Astralpool chlorinators bleed a small current into the pump even when off, which can stop it resetting correctly. Rule that out first — it presents exactly like a dead controller.\u003c\/p\u003e\n\n\u003ch3\u003eManufacturer Catalogues, Diagrams \u0026amp; Part Numbers\u003c\/h3\u003e\n\u003cp\u003eNeed exploded views, spare part numbers, product numbers or diagrams? See the manufacturer catalogues: \u003ca href=\"https:\/\/hasp.com.au\/pages\/Astralpool_Catalogue_2026\"\u003eAstralpool Catalogue 2026\u003c\/a\u003e | \u003ca href=\"https:\/\/hasp.com.au\/pages\/Zodiac_Catalogue_2026\"\u003eZodiac Catalogue 2026\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBefore ordering:\u003c\/strong\u003e confirm this part is correct for your pump. Use the catalogues above, seek professional assistance, or \u003ca href=\"mailto:info@hasp.com.au\"\u003econtact us\u003c\/a\u003e with photos of your existing part, model details, serial numbers and any labels. All electrical work must be carried out by a licensed electrician in accordance with AS\/NZS 3000. This is a \u003ca href=\"https:\/\/heaterandspaparts.com.au\/policies\/refund-policy\" rel=\"noopener\" target=\"_blank\"\u003especial-order\u003c\/a\u003e item.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eCommon search terms: Astralpool SP21488, Viron P320 controller, Viron XT P320 controller, 21488 controller, Astralpool variable speed pump controller, Viron P320C controller replacement.\u003c\/em\u003e\u003c\/p\u003e\n\u003c!-- HASP-FLP-1.0 end | canary: controller-echo-320 --\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Will the P520 controller work on a P320?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. Astralpool lists 21488 for the P320 and 21489 for the P520, each matched to its own motor output. Astralpool specifically warns that fitting a 1 HP control to a 2 HP motor causes the HI A over-current fault.\"}},{\"@type\":\"Question\",\"name\":\"Does this fit a Viron eVo P320?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. The eVo is a different pump generation to the XT. Send us a photo of the pump badge and we will identify the correct controller.\"}},{\"@type\":\"Question\",\"name\":\"My pump display is blank - is the controller dead?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Not necessarily. Viron pumps hold power in their circuit boards, and Astralpool advises turning power off completely for ten seconds before switching back on. Some non-Astralpool chlorinators bleed current into the pump even when off, which stops it resetting correctly and presents exactly like a dead controller.\"}},{\"@type\":\"Question\",\"name\":\"What fault codes can the controller show?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"HI T for over temperature, HI A for over current, LO V for under input voltage, and BSUC when the motor is stuck. HI A can be caused by the wrong impeller or the wrong controller being fitted.\"}},{\"@type\":\"Question\",\"name\":\"Can I fit this myself?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"All electrical work on these pumps must be carried out by a licensed electrician in accordance with AS\/NZS 3000.\"}}]}]}\n\u003c\/script\u003e","brand":"ASTRALPOOL","offers":[{"title":"Default Title","offer_id":46836062748861,"sku":"SP21488","price":870.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/astralpool-controller-viron-p320c-label-sp21488-pool-pump-parts-451.webp?v=1784679673","url":"https:\/\/heaterandspaparts.com.au\/zh-hans\/products\/controller-viron-p320c-label","provider":"Heater and Spa Parts","version":"1.0","type":"link"}